I'm running XP and trying to play q2 and CS. Every 4 seconds or so my mouse lags (stops tracking) and then kicks in. It's worse when I move my mouse while I'm hooked on something in q2. Does anyone know how to fix it? I've already tried tweaking the IOPageLockLimit (http://www.xp-erience.org/sections.php?op=viewarticle&artid=14#mem) setting in the registry and no luck. I've read on messageboards that this cures it but it still won't work for me.