my PC that is!
And this time it's taken my hard drive with it. It crashed again the other night and completely wiped my hard drive. I think I've narrowed it down to the processor and am currently running with a much older and slower AMD Duron 1.6Ghz CPU.
I've managed to rebuild the system using all the old components and the new CPU and so far it's still behaving itself.
This gives me an awkward decision to make as I can buy an Athlon XP3200+ CPU the same as I had on ebay but they are going for silly money and I can buy a brand new CPU for not much more! I would have to buy a new motherboard at the same time though :-(