sorry guys!!!! I sent out the newsletter and left it to run. When I got back a few hours later, the newsletter was stuck in an infinite loop and was sending the same 3 or 4 pages of users over and over again. Unfortunately, the emails were all sent and put into the mail queue, so there was no way to stop them from being sent. I ended up with about 3000 myself ... not fun. Thankfully we do our mail hosting with Google, and between it's message threading and mail filters, it wasn't such a big problem for my inbox ... the bug was fixed, so it won't happen again. Sorry guys.