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  • Ubuntu with KDE and kernel 3.6.2 - performance issues

    - by Pelda
    I have recently swiched to Ubuntu and installed KDe on it. I like software included in Ubuntu but interface from Kubuntu. My problem is, that after installation of kernel 3.6.2 (deafult ubuntu 12.04 is 3.2 I think) - whole KDE interface is laggy and I have to render using Xrended because Opel AL doesnt work. So please tell me - I didint find it anywhere - Does KDE has some problems with new kernel? should i downgrade back to 3.x.x? Thank you for answers and your time. Pelda

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  • Extended validation certificate not changing browser bar green in Firefox

    - by Max
    I'm having some problems with an Extended validation certificate on a site that isn't showing the green bar correctly in Firefox. Chrome and IE are working fine. When I load the page the bar appears for a few seconds and then disappears when the page has fully loaded. Someone mentioned it could be because of loading images over HTTPS, but I'm not sure how valid this case is. We have one image on the page that is loaded from another source over HTTPS, the rest of the images are stored in the file system on the server. FYI - its Windows Server 2008 and ASP.net UPDATE: Solved this problem - the style sheet was loading in a Google Font url using http, not https - changed it and now it's working.

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  • 12.04 - Connecting Acer X203H monitor to new Dell XPS 15z laptop

    - by Lucy Dixon
    I have installed the latest version of Ubuntu (12.04) on my boyfriend's new Dell XPS 15z laptop. He uses a Microsoft wireless keyboard and mouse, and an Acer X203H monitor with his set-up. No problems with the keyboard or mouse, or with connecting the HP printer, but we just can't get the laptop to talk to the Acer monitor. With his old setup he used a VGA cable to connect machine & monitor. New laptop has no VGA port, but we've bought a VGA to HDMI adaptor to connect to the laptop. Have tried using Fn F2 to change the display from laptop to monitor, but it doesn't see the monitor at all. HELP! Is there a driver I can install from somewhere? Or how can I tell Ubuntu to look for the monitor on another port? Completely in the dark, and about to get in trouble!! Thanks

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  • Tor check failed though Vidalia shows green onion

    - by Wolter Hellmund
    I have installed tor successfully and Vidalia shows it is running without problems; however, when I check if I am using tor in this website I get an error message saying I am not using tor. I have tried two things to fix this: I installed ProxySwitchy on Google Chrome, and created a profile for Tor (with address 127.0.0.1, port 8118), but enabling the proxy doesn't change the results in the tor check website linked before. I changed my network proxy settings through System Settings Network from None to Manual, and selected as address always 127.0.0.1 and as port 8118 for all but for the socket, for which I entered 9050 instead. This makes internet stop working completely. How can I fix this problem?

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  • Improve your Application Performance with .NET Framework 4.0

    Nice Article on CodeGuru. This processors we use today are quite different from those of just a few years ago, as most processors today provide multiple cores and/or multiple threads. With multiple cores and/or threads we need to change how we tackle problems in code. Yes we can still continue to write code to perform an action in a top down fashion to complete a task. This apprach will continue to work; however, you are not taking advantage of the extra processing power available. The best way to take advantage of the extra cores prior to .NET Framework 4.0 was to create threads and/or utilize the ThreadPool. For many developers utilizing Threads or the ThreadPool can be a little daunting. The .NET 4.0 Framework drastically simplified the process of utilizing the extra processing power through the Task Parallel Library (TPL). This article talks following topics “Data Parallelism”, “Parallel LINQ (PLINQ)” and “Task Parallelism”. span.fullpost {display:none;}

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  • kile does not get keyboard input, respond to Alt+F

    - by vishvAs vAsuki
    I use 11.10 with Unity. I use two kde apps a lot - kile and kate. Since the latest upgrade, I have observed two problems: a] I can never use Alt+F to select the file menu (works with other apps), yet when I press Alt, kile's menu comes up in the status bar. b] A few times every day, while using kile (haven't used kate as much recently), the keyboard stops responding (just in the 'editor' portion, rather than in structure-tree navigation). I cannot enter any text, but mouse works fine. I usually restart kile to continue working. One inconsistent way to reproduce it (multiple times today): I cut text from one open document using Ctrl-X switched to another document in the same kile window using Ctrl-Tab, then this happened. c] Sometimes, in kate, I can type in the editor but the keyboard won't work in the 'File open dialog'. How do I fix the above?

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  • Not Working Nvidia GT 635M drivers

    - by Andres
    I'm having problems trying to use my Nvidia 635M in my asus N46VJ laptop. I open the "Nvidia X server settings" I get this message : "You do not appear to be using the NVIDIA X driver. Please edit your X configuration file (just run nvidia-xconfig as root), and restart the X server." I open the terminal typi "sudo nvidia-xconf" and this creates a file, /etc/X11/xorg.conf After reboot I'm in a lower resolution of 640x480, without other options to change it, then open the Details system and it shows me this in the Graphic item: Intel® Ivybridge Mobile I type this in the terminal (no idea what that means, I just saw it in a forum!!!) lspci -vnn | grep '\''[030[02]]' and get this: 00:02.0 VGA compatible controller [0300]: Intel Corporation 3rd Gen Core processor Graphics Controller [8086:0166] (rev 09) (prog-if 00 [VGA controller]) 01:00.0 VGA compatible controller [0300]: NVIDIA Corporation GF108M [GeForce GT 635M] [10de:0de3] (rev a1) (prog-if 00 [VGA controller]) I installed bumblebee but nothings happens additionally the additional drivers shows me "no propietary Drivers are in use on this system"

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  • Help installing wine

    - by Carter
    The following packages have unmet dependencies: wine1.5 : Depends: wine1.5-i386 (= 1.5.16-0ubuntu1) but it is not installable Recommends: gnome-exe-thumbnailer but it is not going to be installed or kde-runtime but it is not going to be installed Recommends: ttf-droid Recommends: ttf-mscorefonts-installer but it is not going to be installed Recommends: ttf-umefont but it is not going to be installed Recommends: ttf-unfonts-core but it is not going to be installed Recommends: winbind but it is not going to be installed Recommends: winetricks but it is not going to be installed E: Unable to correct problems, you have held broken packages. I get this error when trying to install wine. Please help!

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  • How to mount a disk that supports Samba sharing (Using Disk Utility)

    - by Luis Alvarado - The Wolverine
    This might be a tricky question but here is the objective: Manage to mount a disk/partition automatically without (or at least trying to avoid): Editing any Samba configuration file Editing the fstab file and to make it a little bit harder, this needs to be done with the options for "Mount Options" in the Disk Utility: Note that if left as it is, every time a user mounts a partition/disk and then tries to share a folder in it, Windows users can see the share but can not access it, with a permission warning appearing. The point of all of this is to find the most user friendly (Oriented towards a GUI) way of enabling a partition to be mounted, accessed by the local user (Read, Write, Execute) and to also be able to, when needed, share a folder and have no problems reading/writing on it from another Ubuntu/Windows/Mac remote computer (Assuming both are in the same LAN network).

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  • Uninstall backtrack 5 dual booted with Ubuntu

    - by omerjerk
    Some days ago I installed BackTrack over my Ubuntu installation. I was having some problems in the bootloader of BackTrack. So I set default bootloader to that of Ubuntu. I didn't remember the command that I typed. so now the default bootloader is of Ubuntu and I want to completely remove BackTrack. how to do that ? If I just delete the installation files of backtrack from ubuntu then it'll still be there in the bootloader.

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  • Project Euler 52: Ruby

    - by Ben Griswold
    In my attempt to learn Ruby out in the open, here’s my solution for Project Euler Problem 52.  Compared to Problem 51, this problem was a snap. Brute force and pretty quick… As always, any feedback is welcome. # Euler 52 # http://projecteuler.net/index.php?section=problems&id=52 # It can be seen that the number, 125874, and its double, # 251748, contain exactly the same digits, but in a # different order. # # Find the smallest positive integer, x, such that 2x, 3x, # 4x, 5x, and 6x, contain the same digits. timer_start = Time.now def contains_same_digits?(n) value = (n*2).to_s.split(//).uniq.sort.join 3.upto(6) do |i| return false if (n*i).to_s.split(//).uniq.sort.join != value end true end i = 100_000 answer = 0 while answer == 0 answer = i if contains_same_digits?(i) i+=1 end puts answer puts "Elapsed Time: #{(Time.now - timer_start)*1000} milliseconds"

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  • Gnome-Screenshot error in Ubuntu GNOME 13.10

    - by Lucas Zanella
    I recently installed Ubuntu GNOME 13.10 (it came with GNOME 3.8, but I replaced by GNOME 3.10) and after a few problems, the only one I couldn't solve was the screenshot problem. When I press the PrtSc key, nothing happens. No sound, no nothing. When I execute it via Terminal by writing "Gnome-Screenshot", it does work and saves in my Pictures folder. I have already tried to re-install the program, but still didn't work. I also tried to create a shortcut with this command line, but still nothing happend. I tried to replace the PrtSc key by another one, just for make sure the problem wasn't in the key, and it still failed. Can anyone help me?

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  • Compile latest blender on ubuntu 12.0464bit?

    - by gabriel
    What i want is to compile latest blender from SVN. I am using this guide My issues are: How can i install it with the final .deb created file and how can i give this package to a ppa! So, when i execute sudo apt-get update; sudo apt-get install subversion build-essential gettext \ libxi-dev libsndfile1-dev \ libpng12-dev libfftw3-dev \ libopenexr-dev libopenjpeg-dev \ libopenal-dev libalut-dev libvorbis-dev \ libglu1-mesa-dev libsdl1.2-dev libfreetype6-dev \ libtiff4-dev libavdevice-dev \ libavformat-dev libavutil-dev libavcodec-dev libjack-dev \ libswscale-dev libx264-dev libmp3lame-dev python3.2-dev \ libspnav-dev it gives me this The following packages have unmet dependencies: libjack-dev : Depends: libjack0 (= 1:0.121.0+svn4538-3ubuntu1) but it is not going to be installed E: Unable to correct problems, you have held broken packages. I know that skype does not allow the installation of those libraries. Thanks

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  • Have I fixed my partition problem with os x 10.5.8? Are my GPT and MBR back to normal?

    - by David Schaap
    I'm new to linux and I have overstepped by abilities. I tried dual booting os x 10.5.8 with ubuntu 11.10 with rEFIt, but I been having problems with partitioning. Instead of enduring more headaches, I've made the decision to simply use ubuntu on VirtualBox. I've tried to return my HDD to normal, but I am looking for confirmation that my partitions are ok. Here is the report from partition inspector: *** Report for internal hard disk *** Current GPT partition table: # Start LBA End LBA Type 1 409640 233917359 Mac OS X HFS+ Current MBR partition table: # A Start LBA End LBA Type 1 1 234441647 ee EFI Protective MBR contents: Boot Code: GRUB Partition at LBA 409640: Boot Code: None File System: HFS Extended (HFS+) Listed in GPT as partition 1, type Mac OS X HFS+ Also, my HDD directory has a bunch of extra folders in them and they appear to be ubuntu related, although it is no longer installed. folders like bin, sbin, cores, var, user, and so on. Those folders aren't supposed to be there, right? Thanks in advance.

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  • Ios Game with many animated Nodes,performance issues

    - by user31929
    I'm working in a large map upside-down game(not tiled map),the map i use is a city. I have to insert many node to create the "life of the city",something like people that cross the streets,cars,etc... Some of this characters are involved in physics and game logic but others are only graphic characters. For what i know the only way i can achive this result is to create each character node with or without physic body and animate each character with a texture atlas. In this way i think that i'll have many performance problems, (the characters will be something like 100/150) even if i'll apply all the performance tips that i know... My question is: with large numbers of characters there another programming pattern that i must follow ? What is the approch of game like simcity,simpsons tapped out for ios,etc... that have so many animation at the same time?

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  • Project Euler 8: (Iron)Python

    - by Ben Griswold
    In my attempt to learn (Iron)Python out in the open, here’s my solution for Project Euler Problem 8.  As always, any feedback is welcome. # Euler 8 # http://projecteuler.net/index.php?section=problems&id=8 # Find the greatest product of five consecutive digits # in the following 1000-digit number import time start = time.time() number = '\ 73167176531330624919225119674426574742355349194934\ 96983520312774506326239578318016984801869478851843\ 85861560789112949495459501737958331952853208805511\ 12540698747158523863050715693290963295227443043557\ 66896648950445244523161731856403098711121722383113\ 62229893423380308135336276614282806444486645238749\ 30358907296290491560440772390713810515859307960866\ 70172427121883998797908792274921901699720888093776\ 65727333001053367881220235421809751254540594752243\ 52584907711670556013604839586446706324415722155397\ 53697817977846174064955149290862569321978468622482\ 83972241375657056057490261407972968652414535100474\ 82166370484403199890008895243450658541227588666881\ 16427171479924442928230863465674813919123162824586\ 17866458359124566529476545682848912883142607690042\ 24219022671055626321111109370544217506941658960408\ 07198403850962455444362981230987879927244284909188\ 84580156166097919133875499200524063689912560717606\ 05886116467109405077541002256983155200055935729725\ 71636269561882670428252483600823257530420752963450' max = 0 for i in xrange(0, len(number) - 5): nums = [int(x) for x in number[i:i+5]] val = reduce(lambda agg, x: agg*x, nums) if val > max: max = val print max print "Elapsed Time:", (time.time() - start) * 1000, "millisecs" a=raw_input('Press return to continue')

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  • Looking for an open source project in Python

    - by Roman Yankovsky
    I am looking for practical tasks to get experience with Python. Just reading the books and not doing any tasks in the language is not effective. I solved some problems on the Project Euler and TopCoder and it helped me to learn the syntax of the language better. But those tasks are hard algorithmically, but as a rule is quite simple from the point of view of programming. Now I'm looking for an interesting open source project in Python, participation in which will help me to better understand the OO-model of language. Although, this is my first step with Python, in general, I am an experienced programmer and I can be useful for a project. May be someone can suggest something?

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  • How do you find libraries(C++) in Ubuntu?

    - by Bora George
    Sorry this is such a beginner question, but I've recently begun programming with C++ on Ubuntu 12.10 and I've installed a few libraries I need to work with, for example PCL and I can't find them to add them to my project, I'm using QTcreator as the IDE and qmake which comes with it. For example with PCL I followed the instructions on their site: sudo add-apt-repository ppa:v-launchpad-jochen-sprickerhof-de/pcl sudo apt-get update sudo apt-get install libpcl-all And as no problems occurred I have to assume they are correctly installed. Most of the tutorial dealing with adding external libraries I've found on the web assume you're on windows and know where you downloaded the library. Since I don't have experience with adding external libraries in C++, could someone please tell me in what file, if there is one, are libraries installed by default in Ubuntu? What is the extension of these library files? Is there a script/command which can help detect a library or all the libraries installed?

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  • A specific user is unable to log in to vsftpd

    - by HackToHell
    I am setting up a new user let his name be ftpguy. He has access to only one directory /var/www/xxx. I have already chowned the directory so that he has write and read privileges. The user is also unable to login via ssh as I have disabled that by changing his shell to /sbin/nologin. Also, in vsftpd config, I have enabled the chroot_local_user. Now whenever I log in from ftp, i get an auth error. Connect socket #1008 to xxxxxxxx, port 21... 220 Welcome to blah FTP service. USER ftpguy 331 Please specify the password. PASS **** 530 Login incorrect. I changed the password to something different several times, using the passwd command, nothing happens, i still the above error. However I am able to log in with my ssh creditals to my ftp server without any problems.(I do not use a key).

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  • How to boot ubuntu on mac

    - by user170863
    I tried many ways to boot Ubuntu on my mac os. I do not have an internal cd drive but wen I tried to install it using the external cd drive(from apple), the drive does not work (Apple made it clear that u cant do this). I tried using many tools. I downloaded the amd64+mac edition and copid it to my usb using unetbootin.. it said that it would not boot of mac but the instructions on another blog was that it has no problems as the iso will take care. it also instructed to install refit and it worked for him but dosent boot for me. I even tried the terminal method of installing but didn't work... please help me out

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  • Are there any plans to create a standard based on libunity?

    - by Sebastian Billaudelle
    In the last few month and maybe even years, Ubuntu and Canonical often were criticised for developing software and desktop components without talking to other groups in the free software community. I don't want to comment on this topic, but I see problems arising with creating a "proprietary" solution for displaying indicators and progressbars with a launcher like Unity. In the world of free and open Desktop Environments we often try to standardize parts and libraries or write specifications to increase collaboration between different desktops. We have the instrument of http://freedesktop.org and a lot of specifications are getting implemented by the major Desktop Environments. In this context, proposing a standard for those indicators would be a great step towards better interoperability between desktops. These indicators represent a great feature on the Linux Desktop and I'm sure that other projects like AWN, Docky, etc. would pick them up. With the great market share of Ubuntu, Canonical is in a position to propose it as a standard and encourage projects to implement it. Thank you in advance, Sebastian Billaudelle

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  • Becoming A Great Developer

    - by Lee Brandt
    Image via Wikipedia I’ve been doing the whole programming thing for awhile and reading and watching some of the best in the business. I have come to notice that the really great developers do a few things that (I think) makes them great. Now don’t get me wrong, I am not saying that I am one of these few. I still struggle with doing some of the things that makes one great at development. Coincidently, many of these things also make you a better person period. Believe That Guidance Is Better Than Answers This is one I have no problem with. I prefer guidance any time I am learning from another developer. Answers may get you going, but guidance will leave you stranded. At some point, you will come across a problem that can only be solved by thinking for yourself and this is where that guidance will really come in handy. You can use that guidance and extrapolate whatever technology to salve that problem (if it’s the right tool for solving that problem). The problem is, lots of developers simply want someone to tell them, “Do this, then this, then set that, and write this.” Favor thinking and learn the guidance of doing X and don’t ask someone to show you how to do X, if that makes sense. Read, Read and Read If you don’t like reading, you’re probably NOT going to make it into the Great Developer group. Great developers read books, they read magazines and they read code. Open source playgrounds like SourceForge, CodePlex and GitHub, have made it extremely easy to download code from developers you admire and see how they do stuff. Chances are, if you read their blog too, they’ll even explain WHY they did what they did (see “Guidance” above). MSDN and Code Magazine have not only code samples, but explanations of how to use certain technologies and sometimes even when NOT to use that same technology. Books are also out on just about every topic. I still favor the less technology centric books. For instance, I generally don’t buy books like, “Getting Started with Jiminy Jappets”. I look for titles like, “How To Write More Effective Code” (again, see guidance). The Addison-Wesley Signature Series is a great example of these types of books. They teach technology-agnostic concepts. Head First Design Patterns is another great guidance book. It teaches the "Gang Of Four" Design Patterns in a very easy-to-understand, picture-heavy way (I LIKE pictures). Hang Your Balls Out There Even though the advice came from a 3rd-shift Kinko’s attendant, doesn’t mean it’s not sound advice. Write some code and put it out for others to read, criticize and castigate you for. Understand that there are some real jerks out there who are absolute geniuses. Don’t be afraid to get some great advice wrapped in some really nasty language. Try to take what’s good about it and leave what’s not. I have a tough time with this myself. I don’t really have any code out there that is available for review (other than my demo code). It takes some guts to do, but in the end, there is no substitute for getting a community of developers to critique your code and give you ways to improve. Get Involved Speaking of community, the local and online user groups and discussion forums are a great place to hear about technologies and techniques you might never come across otherwise. Mostly because you might not know to look. But, once you sit down with a bunch of other developers and start discussing what you’re interested in, you may open up a whole new perspective on it. Don’t just go to the UG meetings and watch the presentations either, get out there and talk, socialize. I realize geeks weren’t meant to necessarily be social creatures, but if you’re amongst other geeks, it’s much easier. I’ve learned more in the last 3-4 years that I have been involved in the community that I did in my previous 8 years of coding without it. Socializing works, even if socialism doesn’t. Continuous Improvement Lean proponents might call this “Kaizen”, but I call it progress. We all know, especially in the technology realm, if you’re not moving ahead, you’re falling behind. It may seem like drinking from a fire hose, but step back and pick out the technologies that speak to you. The ones that may you’re little heart go pitter-patter. Concentrate on those. If you’re still overloaded, pick the best of the best. Just know that if you’re not looking at the code you wrote last week or at least last year with some embarrassment, you’re probably stagnating. That’s about all I can say about that, cause I am all out of clichés to throw at it. :0) Write Code Great painters paint, great writers write, and great developers write code. The most sure-fire way to improve your coding ability is to continue writing code. Don’t just write code that your work throws on you, pick that technology you love or are curious to know more about and walk through some blog demo examples. Take the language you use everyday and try to get it to do something crazy. Who knows, you might create the next Google search algorithm! All in all, being a great developer is about finding yourself in all this code. If it is just a job to you, you will probably never be one of the “Great Developers”, but you’re probably okay with that. If, on the other hand, you do aspire to greatness, get out there and GET it. No one’s going hand it to you.

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  • Fresh install 12.04 Performance & Stability: SONY VPCCW2S1E

    - by George Katsanos
    just yesterday I installed 12.04. Is it normal that installing a package (Chrome for example) takes 5 to 10 minutes (compared to Windows 7 for example which takes 2 or 3)? (with end result: installation failed) Otherwise is it normal that while the system is doing some installation,extracting packs and so on, other applications often become unresponsive? Sidenote: I don't care about fancy desktop effects, I installed ubuntu to go on and experiment with web servers, memcache, Varnish and git/svn. So basically I plan to do lots of console-only operations. My surprise was also the difference of stability compared to an old FreeBSD installation I had on a dinosaur P3 550Mhz :) (I am on a SONY VPCCW2S1E) (I guess it might have to do something with my problems?)

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  • Ubuntu 12.10 Skype cannot use Web Cam Microphone

    - by f.cipriani
    This is making me crazy. After upgrading to Ubuntu 12.10, Skype 4.1.0.20 cannot use my Logitech Web Cam microphone anymore, it keeps using the front panel microphone. I can record correctly from the web cam microphone using the sound recorder the web cam microphone is selected in the sound settings I have tried using pavucontrol I have even shut down pulseaudio and set the web cam microphone device in the skype options manually No matter what, Skype will keep recording using the front panel microphone. Everything was working fine with Ubuntu 12.04 before I upgraded to 12.10. Update: the webcam icon is grayed during calls, even tough everything looks ok in the video options . This makes me think skype has some problems in fully recognizing my web cam.

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  • HTTPS Everywhere Extension Updates to Version 3.0, Adds Protection for 1,500 More Websites

    - by Asian Angel
    If one of your security goals is to encrypt your communication with websites as much as possible, then you will definitely be pleased with the latest update to the HTTPS Everywhere extension for Firefox and Chrome. This latest release adds encryption protection for an additional 1,500 websites to help make your browsing experience more secure than ever. Images shown above courtesy of EFF. You can learn more about this latest release along with installing the extension for Firefox and/or Chrome directly from the blog post linked below… HTTPS Everywhere 3.0 protects 1,500 more sites [via Softpedia] HTG Explains: What is the Windows Page File and Should You Disable It? How To Get a Better Wireless Signal and Reduce Wireless Network Interference How To Troubleshoot Internet Connection Problems

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