I sincerely doubt that you saw a virus. The machines here are severely locked down shared host linux boxes. The rights (permissions) necessary to make viruses really interesting just aren’t here. The other thing is that an interesting virus would also use enough cpu time to get caught pretty quickly.
Looking at stats, you shouldn’t be able to “see” a virus.
Of course someone else who’s seen what you’re talking about may tell me I’m completely wrong. But this ain’t no windows box.
Note, stat’s were changed recently and daily stats are no longer run so don’t see that as a problem.