Ok, this is embarrassing...

I installed Mailman about a year ago. It's something I tried for a bit and found another solution. I forgot all about it. Now I'm getting emails from the script to approve an email to be sent. I went to uninstall Mailman and can't find it! I can access the script via web page (it's at domain.com/mailman/) but that folder doesn't exist when I login with my FTP client! I looked all over the place - even in /cgi-bin. I've also tried /home/mailman - nothing.
I thought it was an old manual installation I did, but I looked in cPanel anyways to see if I installed with Fantastico hoping it'd be an easy uninstall, but I don't see it there.
Anyone know where to look?