Simple Spam Fix Isn't Working Anymore

I installed Carbonize's simple spam fix, which worked for about two weeks, but now the spam is back and thicker than ever. There were 45 spam messages yesterday alone.

Anyone have any ideas?

yes ban the ip 216.127.68.15 which is se4u.net as this is the server all the spam is coming from. You can find contact details for the person sending this spam on http://www.samspade.org/t/whois?a=se4u.net&server=magic