I've tried to look for a solution and so far have come up empty handed. Question: the other vbulletin forums you're on, are they running 4.0? I wonder if this is just a bug in this version.

Regardless what I think we'll do at the next WW Meet (May 29th) is put "Forum Settings" on the agenda for 15-30 minutes. That will give us some time to scroll through all the options and see if we can fix this issue.