Take a look at my sig for my computer specs. I was using it about 12 hours ago and it was working super. I just got a new desk (computer was on the floor). I opened up the sucker and used pressurized air to clean out the dust. Just incase, I pressed each of the parts to seat in.
My CPU (stock at 3.5 - no OC done) is bouncing between 1.9-3.8Ghz. I'm not sure if this is something that's been going on for a while or just started