All last week I've been testing VB 3.7 on my sister board UML Forums - A Social Network for all UML Students

Today I spent about 11 hours getting 3.7 integrated into Defending the Truth. There are SOOO many changes that need to be made.

Implementing 3.7 - This took only about 3-4 hours
Overall Look/Design - Then I spent a few more hours playing around with Defending the Truth's overall look (design, new top-nav bar)
Hacking Time - Few hours hacking vBulletin to remove the old User Control Panel (which I hated), then integrated more user-friendly options (which can be access by top-nav)
Bugs - I spent most of the day trying to find/fix any bugs. There were quite a lot, and there still are some..

I estimated to have this all complete within 3-4 hours, however took 11 hours total! Boy I'm tired!!