It is a weird error message indeed. We've had problems with it in the past, and I'm still not entire sure what causes it, other than it should disappear after a few minutes and never be heard of again for a few months. I think it has something to do with the server having problems writing a request... But the easiest thing to do is just to try repost, if it lasts for more than 10 minutes ever, then just contact me so I can yell at the guys doing the tech work to fix it.
A fatal error has occurred:
Unable to connect to index server: at /home/dropzone/dropzone.com/cgi-bin/forum/admin/GForum/Post/Write.pm line 1040.
Please enable debugging in setup for more details.
I'll keep an eye on it and let you know if it happens again today.