DeltaQuad 

Hmm.  Weird.  I was going through the checkusers category because I found a new user who was in it (turns out that it was a block-evading sock), so I checked user rights for all members of the category, and I thought DeltaQuad didn't have the right at that time.  No CU-related entries exist in DQ's rights log, whether getting or losing the right; is there somewhere else where we could look to see the relevant log entries?