I'm pretty sure that was me.
I was having a bit of fun with colors, and I think I ran the cboard out of memory. (At least that's what the fatal error told me.) Shortly afterward it ground to a crawl and we got a DB error after that.
Fatal error: Allowed memory size of 67108864 bytes exhausted (tried to allocate 64 bytes) in /home/cprogram/public_html/cboard/includes/class_bbcode.php on line 1071
Edit - Yep. That's what did it, I can repeat it. Webmaster, PM me if you want to know what does it if your logs don't tell you.