So yeah, I've decided to give Vista another shot (read: chance). My first experiences with it weren't good at all.
Anyways, I wanted to know if there is a good antivirus for vista available. I don't have any AV installed on Vista and I use Symantec AV on XP (its like 3-4 years old) which has never let me down and is damn fast. But it wouldn't install on Vista

AVG is already ruled out this means. Something that requires me to restart the system on every update can fuck off. I heard it also deletes some important Windows files.
And lastly, I am not necessarily looking for a "free" AV

EDIT:
It shouldn't open thousands of windows when I start the PC.
stay safe,
AamirM