I am running Ubuntu 9.10 and I am experiencing some fairly dire internet speeds from the same connection that Windows machines have no issues with.
All the help I have found online seems to be aimed at older versions of Ubuntu but I have tried some of them;
I have disabled ipv6 I have edited my sysctl.conf file and added the following lines..
net.core.rmem_max = 16777216
net.core.wmem_max = 16777216
net.ipv4.tcp_rmem=4096 39000 187000
net.ipv4.tcp_wmem=4096 39000 187000
net.ipv4.tcp_mem=187000 187000 187000
net.ipv4.tcp_no_metrics_save=1
net.ipv4.tcp_moderate_rcvbuf=1
But to no avail, if anyone has some times aimed at Karmic Koala, or if there is something I am just missing, I would be very grateful.
EDIT
I should point out, I am able to get online and perform most web tasks fine, I just notice when performing speed tests and downloading large files.