Instead of a virus inside YOUR computer it may be a DNS atttack!
Here is a nice video. It is EASY to do. Protect yourself from hostile sites. Over 10,00 sites out there that want to feed you false pages. Anti-virus alone is not enough. Make sure the DNS is not contaminated.
Reportedly everybody knows about this and they are going to fix it. Real Soon. So they say. When they get around to it.

Look at the video:

http://www.opendns.com/support/videos/getstarted/

dont dns attacks just slow down your internet?No. It is not a DOS attack. It is an DNS attack.
It is very FAST and you have no idea of what append. It occurs in a fraction of a second, If a hostile site gets the DNS cache from the server, it can send you to a bogus page. Like Google, eBay, or any site that you would know it will put up a clever site that looks just like the real thing. And the address bar has the right address.

About a year ago they were warned about this and nobody would believe it. There is a very tiny hole in the server software that is open to a DNS attack for a fraction of a second. Because it is near impossible to do the attack manually, most IT people could just not believe it. But the DNS attack only needs to HIT the target a few times out of a thousand attempts to rack in money, advertising, credit cards, bank accounts and whatever else.

Of course, the chance of an one person being hurt by it is very slim. Like maybe we don't really need to wear a seat belt while in an AIRPLANE. Right?