I use the computer mainly for audio production, but have a DSL router and a few various common programs (Word, etc.) as well as a reputable utility program. Since I need max CPU most times, virus/spyware applications are turned "off" in the background.
About three weeks ago, I was forced to reformat my main drive after my audio production software (Pro Tools) started behaving badly (got the blue screen). I reinstalled XP, and updated to Service Pack 1. My audio software manufacturers suggest not installing SP 2 as it can interfere with the program.
The problem is the computer has started to "freeze" intermittently. It doesn't matter what I'm doing -- surfing, recording, etc. -- every now and then the machine will lock up and I have to do a hard restart.
I've scanned all disks, checked the registry, etc., and ran several virus and spyware programs (including Ad-Aware), and it did find an Alexa worm, but removed it. Since then, it's been clean but still freezes up -- especially during and after using Mozilla Firefox. I have completely removed and reinstalled Firefox, but get the same problem. It also freezes occasionally when I haven't used Firefox. I've also run System Mechanic and Error Nuker dozens of times. No errors.
I never had the freeze problem prior to initializing the disk. Thanks.