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  • How can Swing dialogs even work?

    - by Bart van Heukelom
    If you open a dialog in Swing, for example a JFileChooser, it goes somewhat like this pseudocode: swing event thread { create dialog add listener to dialog close event { returnValue = somethingFromDialog } show dialog (wait until it is closed) return returnValue } My question is: how can this possibly work? As you can see the thread waits to return until the dialog is closed. This means the Swing event thread is blocked. Yet, one can interact with the dialog, which AFAIK requires this thread to run. So how does that work?

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  • Sending emails with Thunderbird + Postfix + Zarafa does not work

    - by Sven Jung
    I installed zarafa on my vserver and use as MTA postfix. The webaccess works fine, I can revceive and send emails, also receiving mails with thunderbird (IMAP ssl/tls) works. But there is a problem, sending emails with thunderbird. I established an account in thunderbird with imap ssl/tls connection which works finde, and a starttls smtp connection on port 25 for the outgoing mail server. If I try to send an email with thunderbird I get an error: 5.7.1 Relay access denied this is my mail.log Sep 7 16:10:07 postfix/smtpd[6153]: connect from p4FE06C0A.dip.t-dialin.net[79.224.110.10] Sep 7 16:10:08 postfix/smtpd[6153]: NOQUEUE: reject: RCPT from p4FE06C0A.dip.t-dialin.net[79.224.110.10]: 554 5.7.1 <[email protected]>: Relay access denie$ Sep 7 16:10:10 postfix/smtpd[6153]: disconnect from p4FE06C0A.dip.t-dialin.net[79.224.110.10] and this my /etc/postfix/main.conf # 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 virtual_mailbox_domains = firstdomain.de, seconddomain.de virtual_mailbox_maps = hash:/etc/postfix/virtual virtual_alias_maps = hash:/etc/postfix/virtual virtual_transport = lmtp:127.0.0.1:2003 myhostname = mail.firstdomain.de alias_maps = hash:/etc/aliases alias_database = hash:/etc/aliases myorigin = /etc/mailname mydestination = localhost relayhost = mynetworks = 127.0.0.0/8 [::ffff:127.0.0.0]/104 [::1]/128 mailbox_size_limit = 0 recipient_delimiter = + inet_interfaces = all inet_protocols = ipv4 I don't know what to do, because actually sending mails to internal and external addresses works with the webaccess. Perhaps somebody can help me?

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  • Citrix ICA Client on Mac shift key doesn't work as expected

    - by brianegge
    When I'm connected to a Windows XP computer from my Mac OS X 10.6 using the Citrix ICA Client, it seems that the shift key only works for the first letter typed after pressing shift. In order to type multiple uppercase letters, like ICA, I must either press caps lock, or press and release shift before each character. I've tried switching between standard and enhanced keyboard, as well as the 'Send Special Keys Unchanged' option, but none of these seem to affect the issue. The problem doesn't occur when I switch from the Citrix window to a regular Mac window.

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  • How to remove ActiveX Add on from IE 7 (normal method does not work)

    - by James
    Hi, Does anybody know how to remove an ActiveX control from Internet Explorer 7.0 ? I had been deleting and adding this control numerous times using the built in delete button in Tools, Manage Add-ons, Enable or Disable. This is required for me to test a downloader ActiveX used for a website. It had always shown up in the "Downloaded ActiveX Controls (32 bit) section of the drop down which activates the delete button. However, all of a sudden it now appears under "Add ons that have been used by Internet Explorer" and I cannot delete it from there. The "in folder" column says it's in the C:\WINDOWS\Downloaded Program Files folder... But it does not appear to be there either... Thanks, James

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  • How does geolocation based on IP address work?

    - by Martin
    As all Internet users, I've visited web sites which appear to know in which country and city I'm located. I understand that these web sites typically look up my IP address in a database which maps IP address to country / city which works fairly well. I've also seen companies selling this type of database. How is this database, which maps an IP address to a country / city, created in the first place? Is there a central database somewhere where each ISP registers the link between IP address and country/city? Or does the companies selling geolocation databases contact different ISP's and purchase the mapping information from them? Or is there some organization 'above' ISP's who keeps track of this?

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  • How to work around blocked outbound hkp port for apt keys

    - by kief_morris
    I'm using Ubuntu 9.10, and need to add some apt repositories. Unfortunately, I get messages like this when running sudo apt-get update: W: GPG error: http://ppa.launchpad.net karmic Release: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 5A9BF3BB4E5E17B5 W: GPG error: http://ppa.launchpad.net karmic Release: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 1DABDBB4CEC06767 So, I need to install the keys for these repositories. Under 9.10 we now have the option to do this: sudo add-apt-repository ppa:nvidia-vdpau/ppa See this Ubuntu help article for details. This is great, except that I'm running this on a workstation behind a firewall which blocks outbound connections to pretty much all ports except those required by secretaries running Windows and IE. The port in question here is the hkp service, port 11371. There appear to be ways to manually download keys and install them on apt's keyring. There may even be a way to use add-apt-repository or wget or something to download a key from an alternative server making it available on port 80. However, I haven't yet found a concise set of steps for doing so. What I'm looking for is: How to find a public key for an apt-package (recommendations for resources which have these, and/or tips for searching. Searching for the key hash doesn't seem all that effective so far.) How to retrieve a key (can it be done automatically using gpg or add-apt-repository?) How to add a key to apt's keyring Thanks in advance.

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  • Normal check interval and re try check interval doesnot work in nagios

    - by chandra
    I have configured nagios in my environment and i have used the following setting for a service which monitors the disk space for every 10 min , Normal check interval =10 min retry check interval = 1 min Maximum attempts =2 But accoring to this values i should recieve my first alert after 10 min and then from there for every 1 min. But in my case i am recieving my first alert and then next alert comes to me after 20 min. Can some one help me in fixing this.

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  • Does Moonlight work on linux in Google Chrome?

    - by Matthew
    I'm trying to install Moonlight, but I can only find instructions for setting it up in Firefox. And in the Ubuntu 10.04 repositories, I found a "moonlight-plugin-mozilla" package, but not "moonlight-plugin-chrome" (or similar). Is there any way to do this, or does Moonlight not yet run in Chrome?

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  • Getting OpenID to work on an existing MyBB Install

    - by Djdoubt03
    I am the administrator for a forum,The Vortex. It operates on the latest version of MyBB ver1.6.3. I would like to know how I can get OpenID to become the login for the forums, and also add the users to the MyBB Sql file and overwrite any users that are already registered. This must work on an existing install as I will not be dumping my SQL database to do a fresh install just to get OpenId to work. Any Thought?

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  • Getting PHP to work with apache to run .php files through browser

    - by Kevin Duke
    I have VPS running Debian 5.0 (I think) and I would like to get it to run PHP files. I was told it needed to be configured with Apache. I tried entering the command apt-get install apache2 php5 libapache2-mod-php5. But there was no change. Console output: http://pastebin.com/sVMWq6mA This is everything in my /etc/apache2/mods-enabled: http://img35.imageshack.us/img35/6474/modsb.jpg My webserver can be accessed here: http://206.217.223.136/test/ In my test.php file I have the code : <?php phpinfo(); ?> but instead of displaying the page, it tries to download it. How can I fix this?

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  • How does Deep Zoom (Microsoft Seadragon) work?

    - by Norman Ramsey
    I saw an incredible on Photosynth and Seadragon, some "deep zoom" technology recently acquired by Microsoft. There's also a less responsive version on the web. I'd really like to know how the technology works. Blog entries and web pages welcome, but the ideal answer will include one or more references to published papers in the professional literature.

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  • Localhost doesnot work.

    - by Muhammad Sajid
    Hi, I installed wamp server on xp. During the installation it did not show any error/warning message. Then i start it & type http://localhost/ in url bar but it just show a blank page. I also checked notepad C:\WINDOWS\system32\drivers\etc\hosts their is no restriction for localhost. Help. Thanks...

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  • Cut in excel doesn't work, and copying tables from one program to another returns text

    - by Kristina
    My excel 2007 on Windows 7 operating system seems to have a probelm with regular cut function. when I highlight cells I want to cut and press cut (either on keyboard shortcut Ctrl+x, Home menu cut command, or from the right-click menu) cells start flashing for a split second and after that they only turn normal. When I want to paste them, they past as if copy function was used. If I try to rightclick to use function "insert cut cells" it is not one of the offered options at all. On my home computer I have same combination, Excel 2007 on windows 7 and it works just fine. COuld the problem be due to 64-bit win7 version at my job, and 32-bit version at home? Another problem is when I copy table from excel to word, in word pasting results in unformatted text instead of table as it was in excel. Did someone have such problems and can offer a solution? Thanx a lot.

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  • Clear scr does not work

    - by idea_
    I haven't been able to use the "clear scr" command in a while, as I get the following error: root@server:~# clear The program 'clear' is currently not installed. You can install it by typing: apt-get install ncurses-bin bash: clear: command not found root@server:~# apt-get install ncurses-bin Reading package lists... Done Building dependency tree Reading state information... Done ncurses-bin is already the newest version. 0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded. I'm using Ubuntu Server 9.10. I did some development with the ncurses library a while ago, so I've no doubt broken something.

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  • Speakers silent, headphones work in Ubuntu 9.04

    - by CarlF
    I'm running Ubuntu 9.04. Worked fine for months, then I rebooted yesterday after weeks of continuous operation. Now audio won't play through the speakers. The USB headset works fine, but the Conexant audio (CX20549) does not. Weirdly, it thinks it's playing. pavumeter shows appropriate levels, volume looks OK in alsamixer, but no sound. I did find this page: http://www.eugeneteplitsky.com/fixing-silent-pulseaudio-in-ubuntu-9-04/ Unfortunately the advice there doesn't help me. For one thing, the syntax for the alsa-base.conf file is apparently not actually documented anywhere. For another, my chipset isn't listed in the kernel.org docs he links to! EDIT: would upgrading to 9.10 help? Is there a major change in the audio subsystem between 9.04 and 9.10? Any suggestions? EDIT 2: This is stranger than I thought. Sound works normally in Xine, but is silent in Audacity, VLC and mplayer. What the?

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  • Why does DNS work the way it does?

    - by sabof
    This is a Canonical Question about DNS (Domain Name Service). If my understanding of the DNS system is correct, the .com registry holds a table that maps domains (www.example.com) to DNS servers. What is the advantage? Why not map directly to an IP address? If the only record that needs to change when I am configuring a DNS server to point to a different IP address, is located at the DNS server, why isn't the process instant? If the only reason for the delay are DNS caches, is it possible to bypass them, so I can see what is happening in real time?

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  • Cer ain Key on Keyboard won' work

    - by Panda
    So i recently spilled some beer on my keyboard and i noticed that the "T" key stopped working. So I swapped it out with a new keyboard but now the problem persists? But about 10 minutes after i restart the computer. it works for a little bit, hence this post. But soon it will stop, and not even the "On-Screen Keyboard" will register the "T" key. I am running Windows 7 and really have no idea what is going on. Any help appreciated!

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  • HTTP caching headers: how should must-revalidate work?

    - by Bobby Jack
    Using trac, I'm getting a response with the following header: Cache-control: must-revalidate Moreover, no 'Expires' header is being sent. Our local proxy, however, is caching these responses, so when an edit is made, pages need to be 'hard refreshed' to update. Is the proxy misbehaving? Other headers that might be relevant: Connection Keep-Alive Proxy-Connection Keep-Alive Keep-Alive timeout=15, max=100

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  • UEFI - Linux Mint Boot from USB Doesn't work

    - by Joe Bennett
    I'm running Linux Mint (only OS other than in VirtualBox) and wanting to remove it. I've created a Live USB of Windows 8 using Windows 7 USB/DVD Download Tool - Yes, I know it says Windows 7 but I've been doing research and I am hearing from everywhere that it also works for Windows 8. The ISO was loaded on just fine (AFAIK) Computer came with Windows 8 pre-installed I have Safe boot and Fast boot disabled in the BIOS Settings I have USB as my first boot option I have tried both the USB 2.0 and 3.0 ports Yet, Mint is all that will boot up. Anybody have a similar issue? If it helps, the computer is a Toshiba Satellite S855D Laptop with an AMD APU quad-core processor (3 CPU, 1 GPU)

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  • Fabric and cygwin don't work with windows UNC paths

    - by tcoopman
    I have some strange problems with fabric deployment to Windows Server 2008r2. The thing I try to accomplish is to copy some files to a shared folder with a fabric script (this script does a lot of other things too, but only this step gives me problems). This is the problem: When I try to access a UNC(Universal Naming convention) path I always get access denied kind of answers if I run the script in fabric. When I run the command in an ssh prompt (same user) it works fine. Examples: cmd: robocopy f:/.... //share result: in ssh this works fine, in fabric I get "Logon failure: the user has not been granted the requested logon type aat this computer." cmd: cd //share result: in ssh this works fine, in fabric I get "//share: Not a directory" Further information: uname -a and whoami return exact the same thing in fabric and ssh. I also tried things like mount, net use, but these commands all have kind of the same problem.

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