For those of you not using Spybot or the ones using it and not having the teatimer activated:
I've been reading a lot about spyware here today, so I thought I'd give you a little tip, that will not avoid it all, but will help like hell:
Get spybot (
http://www.spybot.com) and in the advanced features, activate TeaTimer... Everytime a page tries to change your homepage, or try to install something on your PC, it will ask you for "permission".
Best tool I've found so far. It's worth it!
As I said, somethings will escape it, it is not infalible, but it helps a LOT!