Resin/Quercus?
 

Does anyone use vBulletin with Cacho's Resin/Quercus instead of Apache/mod_php? I know that phpBB 3 does not currently work very well with Quercus, and I am wanting something a little bit more compatible with my web server's implementation of PHP.

I know that Caucho uses vBulletin for their own forums, but they use 3.8.3, and not version 4, so I was wondering if version 4 works OK on Quercus.