I was finally able to fix this I've had this problem for a long time and have tried a lot of fixes, none of them have worked. I finally gave up and ordered a new network card with another chip. It has not arrived yet, so naturally I find a solution that works when trying to take care of another problem :-). In my case the cause of the connection dropping was tcp window scaling. I found it here: http://wheel.troxo.com/2008/06/05/tcp-window-scaling-conundrum/ and here: http://www.youtube.com/watch?v=N_AzSOJbKlI
Some network cards have problems with tcp window scaling, which means changing the size of the packets on demand. You can either change the max min boundaries of the packets, or disable scaling altogether. What worked for me was disabling it. To disables tcp window scaling you need to add the line below to your /etc/sysctl.conf. net.ipv4.tcp_window_scaling=0 To reset run sudo sysctl -p -- [Jaunty] Intel wireless 3945ABG is unstable and disconnects frequently https://bugs.launchpad.net/bugs/348204 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs