It was the media PC I built a while back and use it for watching the odd telly program.
The upgrade took ages.
There was much hard disk rattling and everything moved as if in treacle.
I wasn't very impressed to be honest, in fact after the upgrade everything seemed to have slowed right down, even simple things like opening up the browser took over a minute. Very poor.
Then one program claimed that there was not enough memory for it to run, which was a strange thing for it to say on a one gig machine with nothing else loaded.
Except that it wasn't a one gig machine any more. The ram had come loose and I had Vista Ultimate running on a box with 256M of RAM.
I suppose I should have spotted this earlier, but I'm very impressed that it did anything at all. I opened up the box and re-seated the chips and it seems a lot better now....