I have a Soyo K7-VTA Pro motherboard with a 1.0 ghz Athlon T-Bird. The case is a stock "barebones builder" Soyo branded mid-tower. My CPU heatsink/fan combo isn't anything spectacular, just a basic under $20 heatsink rated for up to 1.4 ghz. Yes, I do have thermal compound between the processor and heatsink (the basic white kind that comes with the heatsink). I also have a rear case exhaust fan in the bottom back of the case. My CPU runs around 115 degrees, and I just took the side cover off and it seems to have cooled down around 7 degrees just by doing that. However, I know that this AMD CPU isn't suppossed to get above 95 degrees. My system seems to hang and lock up, and also act odd... especially if it's been on and idle for a long period of time (more than an hour idle). I believe this may be due to higher temperatures. How best should I address this issue? I'm thinking of a better CPU heatsink/fan combo, or possibly an upgraded case that may help with airflow. But, I wanted to get some ideas from here before I just go buying a bunch of stuff. Suggestions, insight, and help welcome!