Admin options showing up for non moderators

On my board, the admin options dropdown box is now showing up for users in a non-modearator usergroup. It doesn't show up for the Registered usergroup, but it does for my other non-mod groups.

The users get an error message if they try to use it; so I am not tremendously concerned. Does anyone know what hack MIGHT have done this? Or is it perhaps a new problem with 2.2.6?

The users can't tell me when they first noticed it.

I have currently installed:
vbquiz

quick reply box

last post titles on forum home page

a custom hack to allow premium users access to restricted styles. (this bug isn't just affecting premium users though)

vbpopup

PM message popups show the number of messages and who sent a PM

vbstats

Nuke posts

I have used all of these hacks except VBquiz and Nuke posts before on previous versions of vbulletin without issue. I really can't see how quiz would be doing it, but I don't see anything in the Nuked code that sets off any bells.

Any thoughts?

Amy

[Admin]

Are you sure that usergroup doesn't have a close/open, delete thread, or move permission set to Yes?

[amykhar]

Yes. I am sure.

Amy