I recently recompiled the kernel and it is a short time after this that is has started to happen. It seems not to be the connection as you say but it does not happen in single player. what happens is that i can be on a server for a couple of minnuits and while i am rotating around the landscape during thinking time. it locks. Allwas during the thinking time.. this makes me miss a few shots and is intensly annoying:) the lockups vary in length from 2 to 20 seconds during which time i cannot switch to a console or ctrl alt backspace to log out. the mouse is usually locked as well but not allwase :S
could it be a different app running in the background? i run a fairly minnimal system with fluxbox, X11, and a few other apps, gentoo linux kernel 2.4.20 (gentoo gaming sources) on a 1.4 athalon with gf4ti4200 (nvidia drivers) 512mb ram.