One advantage of having a slow processor on a network server
"That's funny, natd seems to be taking 30% of the processor time on the machine. I wonder why...?" <clickity clickity> "... oh, great, some virus got onto the windows box. What's that you're saying, PC? I want you to replace me with a Macintel? Okay, we can do that."
Sigh. I don't think this infestation has been there for very long (though the existence of the goddamn Alexa toolbar -- when I don't even use Internet big-bag-of-security-violations on the machine -- isn't a particularly good testimonial to the effectiveness of clamav as anything other than a mail scanner. Grr.