I have a really weird spyware problem. Somekinda spyware has gotten on my machine, and it knows what college I go to. Everytime I open my schools site, I get pop ups for porno. I've run the latest adaware, with no luck. Anyone recognize this behavior? Could it be somekindof virus instead?

//edit

I'm not at school, and the computer im using has never been on my schools network.