It's only taken 6 months, but it turns out the problem is with a recent modification to the TCP networking subsystem of the Linux kernel. Appeared in 2.6.20 I think.
Some old routers (ie. our firewall) can't handle the increased TCP window sizes. Solution: edit /etc/sysctl.conf & add the line: net.ipv4.tcp_window_scaling = 0 Then: sysctl -p /etc/sysctl.conf In the aim of constructive criticism: it seems a bit rude to have submitted a bug report to an official Ubuntu website & not have had any response whatsoever after 6 months. -- very slow external network access https://bugs.launchpad.net/bugs/126711 You received this bug notification because you are a member of Ubuntu Bugs, which is the bug contact for Ubuntu. -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
