[kh99]

Hmm...well, at least it didn't break the forum. So are you seeing *any* info in $vbulletin->userinfo? (edit: I see now in your first post you say you are). You could try using something like Firefox with Firebug (the net tab) and see if the cookies are being sent (I still think it might be a cookie problem).

Also, maybe try include "./global.php" (with the ./ in front). Looking at your code I think you know php much better than I do, and I don't know why it should make any difference, but I seem to remember someone else having an issue before that was fixed by adding the ./ (Edit: but now that I see where you said you *are* getting some info in $vbulletin, it must be included correctly so probably that's not it).

Edit: is the code you posted inside a function? That's another thing that doesn't work.