1) I can modify the title of a thread fine, but I'm guessing that something changed. I'll check the back end to see if I changed something inadvertently.

2) Not all vBulletin boards automatically have the [SOLVED] [RESOLVED] [UNSOLVED] modification installed. It's a modification that the admins have to install. I've thought about using it but knowing our user base, I think about 2% of the threads would have it, and about 1% of the users would use it and. And My Thread Mafia would find some way of abusing it