I am having problems with my computer freezing for about 30 second intervals intermittently. At times, I have to power it off and then back on. Specs: AMD Athlon XP 1800+ MSI 6330 Mobo 512 RAM (2 x 128, 1 x 256) PC133 SDRam 80GB 7200 RPM WD HD (Primary) 120GB 7200 RPM WD HD (Secondary) PNY GeForce 4 5700 LE Optima 128 MB 2 back fans, 1 side fan, 1 front fan, 1 top fan 350 Watt Power Supply The fans are spinning fine, heat is normal, heat sink replaced about 2 months ago. I have Norton Internet Security and it hasn’t found any viruses. Also, I ran the Trend Micro virus scan to be sure. I use Spybot Search and Destroy and Aluria to scan for spyware and none is detected. I ran SiSoft Sandra Pro 2004 and it didn’t find any problem either. Also, I thought it may have been a bad XP Install, so I reformatted my hard drive and with a fresh install of windows, it is still a problem. Prior to reinstalling windows, I only had SP1, now I have SP2 as well. Thanks in advance.