After reading http://spywarehammer.com/simplemachinesforum/index.php?topic=7624.0 your post sounded so familiar. This message can be caused not only by BAD RAM, BAD DRIVERS, a HOT CPU but overlapping Security systems.
You may want to join a HIJACKTHIS forum and work it out.
We have an an EMachines T2958 with Windows XP Home SP3. We recently installed a new Netgear USB wireless adapter and a new version of Bullguard. After that, it started running slow and started giving us blue screens that say "a device driver attempting to corrupt the system has been caught. The faulty driver on the kernel stack must be replaced with a working version." I can get into Safe Mode fine, but I get a blue screen after a few minutes in normal mode that runs slow. I thought it may have been either the D-Link wireless card we have or the Netgear USB adapter so we tried removing the D-Link card, and it didn't make any difference.
I feel like I've tried everything, even system restore doesn't work. Is there some kind of way to fix this?