Don't know if any of you are afflicted with this "new spam" but it is rather annoying.
My university, my department actually, is discussing how to best handle it. It would be nice close down TCP port 139 (and UDP port 135 I think) but since we are a university there is a certain amount of openness required.
I think the best solution for us would be to stop it at a firewall. Basically close of the port to all IP addresses except for those few we trust.
Since this is something that will be discussed at a staff meeting tomorrow I expect a lively discussing.