The search didn't yield anything (which I also found weird) but it's more than probable that I did it wrong since I was running on an hour's sleep. I'll run it now and attach the results.
I have Bugsack set to show taint records, but
the taint that it shows doesn't seem to be what's causing my menus to bork up unless it's totally random whether they do or not. Sometimes they've messed up before I even enter into combat (when the message pops up), like the other day when I literally logged on and they didn't work.
Here's the results of the search:
http://dl.dropbox.com/u/11101373/DropDown.txt