Beer - (and others)

Note the comment in my last post, that reports that if your ISP does its own DNS routing the FBI site - the one most people have been sent to - may give you a green indication even if your machine is infected. The second link there is to the DNS Consortium where you get a more specific test of your own machine (excluding the effect of what your ISP does) that you might also want to run.

Neither check takes more than a few seconds.

John