Go get the Macscan (public beta) for free it searches your HD for spyware and allows you to delete it. Appartently I have no spyware on either of my partitions could be something to do with the fact I don't use Instant Messagers. (No use for them myself.)
http://macscan.securemac.com/However the sinic in me thinks all these free spyware betas may be a cheeky way to give people a false sense of security.
Although on the forum I originally got this from many were amazed to find they had 3 or 4 spyware progs on there HD.