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  • Firefox or IE crashes when I try to print

    - by Vidar
    When I try to print a web page in either IE or Firefox - it just crashes? Any ideas? Printer works with other applications fine - like Word etc. It's only browser related for some strange reason. I am running XP SP3 - the printer is a Canon Laser Shot LBP 1120

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  • control + enter in browser takes only .com?

    - by Abhilash M
    I have this strange problem, how exactly does control + enter decides the domain of a website?? If i type stackoverflow,then hit control+enter, it works and takes to homepage, but i type ubuntuforums, then hit control + enter, it does not recognise its ubuntuforums.org, but goes to ubuntuforums.com?? How does this exactly work? If i need to change this behaviour, how should i do it?

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  • Git push write access for deployment denied

    - by Stepchik
    I have strange issue when try git push. Git clone and commit works fine. W access for my_project DENIED to deploy_my_project_ My gitolite.conf repo my_project R = deploy_my_project_111 RW+ = my_name I wonder why git push takes wrong user (deploy_project_111) with read access. This error is float. Twice i had to change rsa key(rsa keys is unchangeble) and restart computer. May be my computer do something wrong.

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  • A kinetic mouse lag when connecting to a TV via HDMI

    - by Ville Koskinen
    I've been unable to find out what is causing a mouse cursor lag when I'm using my Win7 laptop connected to a 1080p TV via HDMI. The symptom can be described as the cursor feeling 'heavy'. When I'm using the TV screen as an extension to the desktop, there is no lag on the laptop side of the desktop. It does not feel like a refresh rate problem: for example scrolling a big web page on the TV side is pretty OK. Strange huh? Help appreciated!

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  • About Eclipse's "Upgrade" menu in Team

    - by djechelon
    I wonder what that command means. I have a project shared on Subversion and this strange menu item appeared to me. I tried to click it, but Eclipse required me a confirmation to proceed because the operation cannot be undone. Eclipse version Eclipse IDE for Java Developers Version: Indigo Service Release 2 Build id: 20120216-1857 I didn't post on SO because my question is related to Eclipse itself and not to programming

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  • Is it possible to download corrupted torrent files, even with a download client builtin checksum verification?

    - by Somebody still uses you MS-DOS
    I downloaded some mkv/mp4 files with my new router (I can download directly from it, using transmission), and all of them seem to be corrupted: lags, strange artifacts when using vlc, crashes with mp4, etc. When a downloaded part is corrupted, transmission warns you and downloads that part again. My question is: even after the transmission verification, is it possible that the downloaded file is still corrupt?

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  • What git binary I am using?

    - by Kuroki Kaze
    I just installed git 1.6.0 from source, but strange thing now happening to me: debian:~/git# git version git version 1.5.6.5 debian:~/git# which git /usr/local/bin/git debian:~/git# /usr/local/bin/git version git version 1.6.0 How can I make 1.6.0 binary default? System is Debian Lenny. Git installed with simple ./configure && make && make all.

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  • Windows Vista - overlay icon with two people

    - by abcdefghijkl
    I had to save data from my harddisk to an external drive (with linux) and after reinstalling Windows Vista (and copying the files back) there is a strange overlay icon with two people. How do I get rid of this ? First I thought it could be shared, but the files are not shared. The user is the owner of all those files and they are accesible to everyone. Any ideas what Vista would like to say to me with these icons and how I get rid of them ?

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  • Mouse is rotated by 90 degrees

    - by Damien
    My mouse has recently started a very strange behaviour in that left = up, right = down, up = right and down = left. i.e. it's like my mouse is rotated by 90 degrees. I have tried uninstalling the mouse, run spybot and still no joy. It's rather frustrating and I'm going loopy - literally.

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  • Annoying Windows Explorer bar present on OEM Preinstalled Windows 7

    - by Velcro
    We have recently got some preconfigured ready-to-use computers. During some checks, I saw a strange bar located between address bar and toolbar in Windows Explorer. I removed all trialware and Google Toolbar as well, but this bar doesn't go away. What can I do to remove it? EDIT: My personal computer looks like this: Also, cursor changes to when I hover the bar. EDIT: On another OEM installation, there isn't the bar:

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  • clear IP address of Ethernet interface

    - by jackhab
    What is the Linux command to clear IP address of an interface without bringing it down and/or restarting network services. Seems strange ifconfig is able to change IP address but has no option to clear it, or am I wrong? EDIT:As simple as ifconfig eth0 0.0.0.0. They should have put it in the man

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  • Windows server administration over web browser

    - by Andras Sebestyen
    I wonder if there is a software which can control Windows server over a browser. I know it sounds is strange however I haven't seen any and as you can do scripting with *nix system I think it could be a good one. Functions that I am after: User management Printer install msi assign I know there are many programmes including a win server but I would like to do it only one surface. Has anyone come a cross such a thing like this?

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  • How do I prevent TCP connection freezes over an OpenVPN network?

    - by Jason R
    New details added at the end of this question; it's possible that I'm zeroing in on the cause. I have a UDP OpenVPN-based VPN set up in tap mode (I need tap because I need the VPN to pass multicast packets, which doesn't seem to be possible with tun networks) with a handful of clients across the Internet. I've been experiencing frequent TCP connection freezes over the VPN. That is, I will establish a TCP connection (e.g. an SSH connection, but other protocols have similar issues), and at some point during the session, it seems that traffic will cease being transmitted over that TCP session. This seems to be related to points at which large data transfers occur, such as if I execute an ls command in an SSH session, or if I cat a long log file. Some Google searches turn up a number of answers like this previous one on Server Fault, indicating that the likely culprit is an MTU issue: that during periods of high traffic, the VPN is trying to send packets that get dropped somewhere in the pipes between the VPN endpoints. The above-linked answer suggests using the following OpenVPN configuration settings to mitigate the problem: fragment 1400 mssfix This should limit the MTU used on the VPN to 1400 bytes and fix the TCP maximum segment size to prevent the generation of any packets larger than that. This seems to mitigate the problem a bit, but I still frequently see the freezes. I've tried a number of sizes as arguments to the fragment directive: 1200, 1000, 576, all with similar results. I can't think of any strange network topology between the two ends that could trigger such a problem: the VPN server is running on a pfSense machine connected directly to the Internet, and my client is also connected directly to the Internet at another location. One other strange piece of the puzzle: if I run the tracepath utility, then that seems to band-aid the problem. A sample run looks like: [~]$ tracepath -n 192.168.100.91 1: 192.168.100.90 0.039ms pmtu 1500 1: 192.168.100.91 40.823ms reached 1: 192.168.100.91 19.846ms reached Resume: pmtu 1500 hops 1 back 64 The above run is between two clients on the VPN: I initiated the trace from 192.168.100.90 to the destination of 192.168.100.91. Both clients were configured with fragment 1200; mssfix; in an attempt to limit the MTU used on the link. The above results would seem to suggest that tracepath was able to detect a path MTU of 1500 bytes between the two clients. I would assume that it would be somewhat smaller due to the fragmentation settings specified in the OpenVPN configuration. I found that result somewhat strange. Even stranger, however: if I have a TCP connection in the stalled state (e.g. an SSH session with a directory listing that froze in the middle), then executing the tracepath command shown above causes the connection to start up again! I can't figure out any reasonable explanation for why this would be the case, but I feel like this might be pointing toward a solution to ultimately eradicate the problem. Does anyone have any recommendations for other things to try? Edit: I've come back and looked at this a bit further, and have found only more confounding information: I set the OpenVPN connection to fragment at 1400 bytes, as shown above. Then, I connected to the VPN from across the Internet and used Wireshark to look at the UDP packets that were sent to the VPN server while the stall occurred. None were greater than the specified 1400 byte count, so the fragmentation seems to be functioning properly. To verify that even a 1400-byte MTU would be sufficient, I pinged the VPN server using the following (Linux) command: ping <host> -s 1450 -M do This (I believe) sends a 1450-byte packet with fragmentation disabled (I at least verified that it didn't work if I set it to an obviously-too-large value like 1600 bytes). These seem to work just fine; I get replies back from the host with no issue. So, maybe this isn't an MTU issue at all. I'm just confused as to what else it might be! Edit 2: The rabbit hole just keeps getting deeper: I've now isolated the problem a bit more. It seems to be related to the exact OS that the VPN client uses. I have successfully duplicated the problem on at least three Ubuntu machines (versions 12.04 through 13.04). I can reliably duplicate an SSH connection freeze within a minute or so by just cat-ing a large log file. However, if I do the same test using a CentOS 6 machine as a client, then I don't see the problem! I've tested using the exact same OpenVPN client version as I was using on the Ubuntu machines. I can cat log files for hours without seeing the connection freeze. This seems to provide some insight as to the ultimate cause, but I'm just not sure what that insight is. I have examined the traffic over the VPN using Wireshark. I'm not a TCP expert, so I'm not sure what to make of the gory details, but the gist is that at some point, a UDP packet gets dropped due to the limited bandwidth of the Internet link, causing TCP retransmissions inside the VPN tunnel. On the CentOS client, these retransmissions occur properly and things move on happily. At some point with the Ubuntu clients, though, the remote end starts retransmitting the same TCP segment over and over (with the transmit delay increasing between each retransmission). The client sends what looks like a valid TCP ACK to each retransmission, but the remote end still continues to transmit the same TCP segment periodically. This extends ad infinitum and the connection stalls. My question here would be: Does anyone have any recommendations for how to troubleshoot and/or determine the root cause of the TCP issue? It's as if the remote end isn't accepting the ACK messages sent by the VPN client. One common difference between the CentOS node and the various Ubuntu releases is that Ubuntu has a much more recent Linux kernel version (from 3.2 in Ubuntu 12.04 to 3.8 in 13.04). A pointer to some new kernel bug maybe? I'm assuming that if that were so, then I wouldn't be the only one experiencing the problem; I don't think this seems like a particularly exotic setup.

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  • cannot connect via http but can via ssh in Windows 7

    - by Tim
    Hi, I have a strange problem in my Windows 7. Sometimes web browsers (ie firefox and chrome) works sometimes don't. But ssh is always working. What could be the reason and how to fix it? My router is Linksys WRT54GL. Web browsing via firefox in my Ubuntu is okay. Thanks and regards!

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  • LDAP users as OU

    - by vpereira
    Hi, i'm facing a strange LDAP configuration. Some admin, just created users as OU in OpenLDAP. To do it, the admin, changed some attributes in the OU like posixAccount, inetOrgPerson, organizationalPerson and person.. my question is what is the advantage to do it? It works, but i would like to know the drawbacks about it.

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  • permission errors with python/django

    - by tipu
    Error can be seen here: http://djaffry.selfip.com:8080/ If i go to the folder /srv/twingle/search and do ls -l I get -rwxrwxrwx 1 root root 65142784 May 26 20:28 words.db I gave it 777 access (absolutely unsafe, I know, but I thought it would atleast work) any idea what can be the permissions problem? Edit: A very strange problem is that the code doesn't crash once every few refreshes.. then goes back to crashing

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  • can't send with postfix but I can whith one user

    - by CvR_XX
    I have a postfix and dovecot server but when i try to send an email i get an time -out. Im trying to send with the email [email protected]. A telnet session isn't helping much ether. I get a blank screen. Local it's working fine. My smtp service is running on treadity.com:25. The strange thing is that the logs are completely empty with any info regarding sending emails. Receiving is working alright. Another strange thing is that i've send some message's and that it worked. But that is only with one email. I can still send from that account but other emails are failing any idea's? config file: # See /usr/share/postfix/main.cf.dist for a commented, more complete version # Debian specific: Specifying a file name will cause the first # line of that file to be used as the name. The Debian default # is /etc/mailname. #myorigin = /etc/mailname smtpd_banner = $myhostname ESMTP $mail_name (Debian/GNU) biff = no # appending .domain is the MUA's job. append_dot_mydomain = no # Uncomment the next line to generate "delayed mail" warnings #delay_warning_time = 4h readme_directory = no # TLS parameters #smtpd_tls_cert_file=/etc/ssl/certs/ssl-cert-snakeoil.pem #smtpd_tls_key_file=/etc/ssl/private/ssl-cert-snakeoil.key #smtpd_use_tls=yes #smtpd_tls_session_cache_database = btree:${data_directory}/smtpd_scache #smtp_tls_session_cache_database = btree:${data_directory}/smtp_scache smtpd_tls_cert_file=/etc/ssl/certs/dovecot.pem smtpd_tls_key_file=/etc/ssl/private/dovecot.pem smtpd_use_tls=yes # See /usr/share/postfix/main.cf.dist for a commented, more complete version # Debian specific: Specifying a file name will cause the first # line of that file to be used as the name. The Debian default # is /etc/mailname. #myorigin = /etc/mailname smtpd_banner = $myhostname ESMTP $mail_name (Debian/GNU) biff = no # appending .domain is the MUA's job. append_dot_mydomain = no # Uncomment the next line to generate "delayed mail" warnings #delay_warning_time = 4h readme_directory = no # TLS parameters #smtpd_tls_cert_file=/etc/ssl/certs/ssl-cert-snakeoil.pem #smtpd_tls_key_file=/etc/ssl/private/ssl-cert-snakeoil.key #smtpd_use_tls=yes #smtpd_tls_session_cache_database = btree:${data_directory}/smtpd_scache #smtp_tls_session_cache_database = btree:${data_directory}/smtp_scache smtpd_tls_cert_file=/etc/ssl/certs/dovecot.pem smtpd_tls_key_file=/etc/ssl/private/dovecot.pem smtpd_use_tls=yes # See /usr/share/postfix/main.cf.dist for a commented, more complete version # Debian specific: Specifying a file name will cause the first # line of that file to be used as the name. The Debian default # is /etc/mailname. #myorigin = /etc/mailname smtpd_banner = $myhostname ESMTP $mail_name (Debian/GNU) biff = no # appending .domain is the MUA's job. append_dot_mydomain = no # Uncomment the next line to generate "delayed mail" warnings #delay_warning_time = 4h readme_directory = no # TLS parameters #smtpd_tls_cert_file=/etc/ssl/certs/ssl-cert-snakeoil.pem #smtpd_tls_key_file=/etc/ssl/private/ssl-cert-snakeoil.key #smtpd_use_tls=yes #smtpd_tls_session_cache_database = btree:${data_directory}/smtpd_scache #smtp_tls_session_cache_database = btree:${data_directory}/smtp_scache smtpd_tls_cert_file=/etc/ssl/certs/dovecot.pem smtpd_tls_key_file=/etc/ssl/private/dovecot.pem smtpd_use_tls=yes smtpd_tls_auth_only = yes #Enabling SMTP for authenticated users, and handing off authentication to Dovecot smtpd_sasl_type = dovecot smtpd_sasl_path = private/auth smtpd_sasl_auth_enable = yes 1,1 Top

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  • Windows Explorer not displaying drives (Windows 7)

    - by mjd79
    A very strange issue - Windows Explorer doesn't display the drives connected to my machine. I did make some changes to my setup a while back with the Local Group Policy Editor to disable the "Aero Shake" behavior, so I may have inadvertently enabled or disabled something related to this, but to be honest, I don't remember when the behavior actually started. Any ideas? This is a Windows 7 machine.

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  • How to do client side NFS failover in Linux?

    - by Doug
    I have a CentOS 6.3 client that needs to access NFS storage. There are two NFS servers that serve up the same content stored on a SAN with a clustered filesystem. How do I set up CentOS to failover to the backup NFS server if needed? When I Google, I keep reading that Linux does not support this, but that would be strange since there is plenty of information out there on how to set up a clustered Linux NFS server farm...

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  • How did what appears to be a virus get on my computer? (explanation of situation enclosed)

    - by Massimo
    My system is Windows XP SP3, updated with the latest patches. The PC is connected to a Cisco 877 ADSL router, which does NAT from the internal network to its single static public IP address. There are no forwarded ports, and the router's management console can only be accessed from the inside. I was doing two things: working on a remote office machine via VPN and browsing some web pages on the Cisco web site. The remote network is absolutely safe (it's a lab network, four virtual servers, no publicly accessible services and no users at all; also, none of what I'm going to describe ever happened there). The Cisco web site... well, I suppose is quite safe, too. Suddenly, something happened. Strange popups appears anywhere; programs claiming they're "antimalware", "antispyware" et so on begins autoinstalling; fake Windows Update and Security Center icons pop up in the system tray. svchost.exe began crashing repeatedly. Then, finally, after some minutes of this... BSOD. And, upon rebooting, BSOD again. Even in safe mode. Ok, that was obviously some virus/trojan/whatever. I had to install a new copy of Windows on another partition to clean things up. I found strange executables, services and DLLs almost anywhere. Amongst the other things, user32.dll and ndis.sys had been replaced. A fake software called "Antimalware Doctor" had been installed. There were services with completely random names or even GUIDs (!), and also ones called "IpSect" and "Darkness". There were executable files without an .exe extension. There were even two boot-class drivers, which I'm quite sure are the ones that finally caused the system to crash. A true massacre. Ok, now the questions: What the hell was that?!? It was something more than a simple virus! How did it manage to attack my computer, as I am behind a firewall and was not doing anything even only potentially harmful on the web at the time?

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