OK firstly I'd like to say I do still care despite what people may think.
Personally I haven't had a white screen for 6 months on here so I've never really found it a problem.
To demonstrate that I do care, as everyone seems to want it so bad I'm willing to upgrade to vb4. It appears the license is $195, so lets see if we can get some donations in to paypalpayments@lindonnetworks.com
Edit:
After looking into it, I think the publishing suite might be the best option ($285), this allows a load more options such as wiki articles etc. Have a look http://www.vbulletin.com/index.php?do=screenshots
Upgrading vBulletin is not going to solve this problem. It may help bury it for a few weeks, but it's not getting to the heart of the issue.
There's something wrong with your host or sever configuration and you need to get to the bottom of it.
Problem is this isn't just an expensive one off payment, it's an expensive payment that needs to happen monthly - one off donations are all well and good but most likely won't come near to covering the costs of upgrading to a dedicated server (that's a guess though since I obviously don't know what David's paying at present.)I would GLADLY donate to help fund hosting this site on a DEDICATED server that doesn't throw fits all the time.
IAny version of VB has trouble running on a crowded shared server.