Quick question: I've been using AVG Free for a good while now but it seems like version 8 is massively bloated. That is, it's putting a 100% load on my CPU (yeah, I have a single core CPU, but still). Specifically, the Resident Shield Process, which basically is the anti-virus, is doing that. (Side-note: it didn't do that in XP Pro. Go figure.)

Since I'm using Vista 64, is there a free anti-virus program that is lightweight and does the job?

Thanks!