As far as I know he only had AVG running in the background. No idea what he did with it to be honest, we ran spyware scans quite often and usually they'd all come up clean. We even formatted the hard drive every few months and it would run fine for about a week before he claimed I'd done something wrong and broken it, despite him being the only person in the house who actually used that computer.

All I know is that it sped up considerably when we increased the RAM. You'd be waiting about ten minutes for the thing to shut down, after that it was pretty much instant. I didn't even format the hard-drive before the upgrade.
