setzer - 4:53 am on May 27, 2010 (gmt 0)
If anything, move to IPB. vBulletin is a sinking ship right now. They'll probably rebound in the future but right now things look bad. I regret purchasing a 4.0 license.
Honestly, though, I have no issues with the current forum software you guys use. Could look nicer but that's it.