It may be a simple RAM issue. The vid and sound card are both using a bit of memory and don't forget that a game like UT2K3 uses a ton of memory. If you're OS is XP then you're really using a ton of memory. My system idles using about 360 megs of RAM and I have noticed that it peaks as high as 800 megs. I bet if I only had a stick of 512 in my PC I'd have those same problems. I would suggest buying another stick of 512. I'm only guessing. Maybe someone who really knows something will agree with me.
