WordPress MU

Is it possible to use WordPress MU and vBulletin's user database and login?

Probably. You may want to search here and at the regular wordpress site for a workthru or plugin. I'm sure it's come up before.

They have vBulletin and regular WordPress bridge at vbulletin.org site. It shares users and posts across them:
http://www.vbulletin.org/forum/showthread.php?t=134521

doesn't support WPMU :(

In what way?

Hello,

I was wondering if anyone had come up with a solution for this problem? vBulletin works with the regular Wordpress, but not the MU version. Has there been any solutions?

Thanks!

Anyone know if this is possible or find a way to do it?

I got the bridge to work with MU. However, I'm using MU as a single user blog, e.g. one user creates all the blogs. The logins work fine although the "bridge" to use VB comments wont work.