I just recently installed VB on a new site, but the forum is coming up with a blank page www.itravelforum.com/forum I have contacted VBulletin, they refered me to this http://www.vbulletin.com/docs/html/blank_pages gone through them all. Contacted my host (I have a VPS) they said "I do not see that PHP has been compiled since November of 2005. We would not make any changes on your VPS unless you requested them. When checking the Apache error logs I see that you are getting segmentation faults when going to the forums. This could point to a memory leak in one of the scripts. Do you have an up-to-date version of vBulletin installed?" Im illiterate when it comes to this, and dont understand what that means, expect for the current version, which it is running. If you think you can fix my problem...I will pay you $25 once its up and running. PM me if you're interested.
I checked it myself and it seems like your host is not compiling php. Do you have php readily installed? Let me know via pm.
http://www.itravelforum.com/forum/index.php Firefox asks me to open it, which means that it's an issue with the PHP on your host. Just ask your host to re-compile apache.