First, make sure that it says that for both versions, one after the other.
The next check is about dns, if someone is spoofing Apple's software update servers to make you look at "Bundy-Server.local", this could also happen then. I don't happen to know the address that SoftwareUpdate uses, so you will have to track that down. But in the mean time I would look at you DNS services to see if something is up there.