Guys, most of the spam at the moment is due to the Swen worm, though it seems to be tailing off a bit now.
I posted a thread called "swendeleter" in this forum, so if you run Windows or Linux it's definitely worth having. It may also run on Amigas with a little tweaking as it's a perl script. What this does is delete the swen mails at the server with no interaction from the user whatsoever. Run it before you download your mail and you will find the larger spam mails have disappeared.
(sorry, I'm too lazy to dig up the URL again)