We have a Pentium 200 Win NT4 machine in the cleanroom for people to use. Last week, some retard infected it with spyware from a file sharing program. Now it has the "about:blank" hijacking virus on it. The *&$%ing thing seems to be indestructable (do a search on Google and you will see what I'm talking about).
I put FireFox on it... wow it's nice and fast even on such a slow machine!