No.
Sounds you've isolated your problem.
Seriously, are you sure it's software related. That's a pretty powerful arsenal of software to be having no affect. Is Spybot/Adaware finding things, but not removing them or are they giving you a clean bill of health?
If they are finding, but not removing you'll have to resort to Hijack This, but you'll need to go to one of many forums where experts will analyze your Hijack This log (for free) and tell you how to remove the offendors. Hijack This can remove anything, but it's difficult to make heads or tales out of the log for about 99.9% of the population.
It could be hardware, though. Maybe you've got a stick of RAM going bad. If you have multiple sticks of RAM try removing one and see if the computer works. Heat issues could be a problem -- especially a failing CPU fan. It might be spinning half as fast as it should and still look like it's working fine. Try opening up the case and see if your computer quits freezing/crashing -- especially if you can point a fan directly into the box.
Aside from that a bad power supply, bad motherboard, stting on the floor when there's a lot of static electricity in there air, or being plugged into the same circuit as some other appliance, e.g., a computer might freeze every time someone makes a copy because of the power surge on the circuit made by the copier. Put that microwave oven somewhere else!!!