So, in the past few weeks I've noticed that sometimes when I'm playing a game (Wolfenstein: Enemy Territory) that I will have dramatic frame rate loss. So, my first instinct is to restart, but, when I try to restart it just hangs at shutdown. This happens for both shutdown and restart, by the way. When it happened again, I exited the game, and checked the task manager. My CPU was running at 50-60% when nothing else was running. I checked all the processes and nothing seemed to be hogging resources. SVChost might have been using a little more than usual but I figured that isn't very substantial since this is a Vista mahcine. Now, this problem doesn't ALWAYS happen when playing Wolfenstein, because it has happened once or twice when I wasn't playing the game. I tried re-installing the game but it hasn't seemed to change anything. Here are my specs: Windows Vista Home Premium (Not service pack 1, won't install on my laptop) Intel(R) Pentium Dual CPU T2310 @ 1.46 GHz 2GB Ram DDR2 Intel Mobile 965 Express chipset family video card Gateway 93.08 MoBo Let me know if there's anything else you need to know. I've tried CCleaner, Spybot, Ad-Aware 2007 so I'm pretty sure I don't have a virus or malware. Thank you for your time.