aaaargh my computer is playing silly buggers. Running slow as a very very slow thing. CPU usage is always between 75% & 100%, even with no applications running, and there's nothing in the processes list that seems to be using a lot of system resources. I panicked in case it was my CPU over-heating but it was exactly the same after the computer had been turned off over night, so I don't think it can be that. I've system restored to days ago before this started happening, I've run spy-bot, ad-aware and norton anti-virus - nada. I am now running on-line virus scan. And if that don't help I don't know what I'm going to do.