Comment 20 for bug 59331

> I am struggling with this issue on Hardy Heron (8.04). Kernel version 2.6.24-23. Tried all the workarounds mentioned in > the comments including adding the following lines to sysctl.conf:
> net.ipv4.tcp_window_scaling=0
> net.ipv4.tcp_wmem = 4096 16384 131072
> net.ipv4.tcp_rmem = 4096 87380 174760
>
> Turning off ipv6.
>
> Nothing seems to help.

As I wrote above, the "echo 0 > /proc/sys/net/ipv4/tcp_timestamps" command solved the problem for me, so I wrote the only one command "net.ipv4.tcp_timestamps = 0" in my /etc/sysctl.conf file. Didn't it help for you?