I get a ton, recently its gone from maybe 10 a day to over 30 every day. Usually closer to sixty.
This has happened not only to me, but to my parents and sister, as well as several other people I know who are all on my ISP. My dad forwarded me some messeges from a mailing list hosted by our ISP with people complaining about all the spam all of a sudden. One of them suggested a program to get rid of it. I had tried mailwasher (filters didn't work), SAProxy (worked GREAT, but used WAY too much memory and crashed all the time) and finally this last one. It's a learning filter, since I've been "training" it Saturday, it's caught just about all the spam I get.
I can't remember the name though. PM me if you're interested and I'll link you to the site when I get home, I remember it being free under the GNU, so maybe it's on sourceforge.