Sorry, I forgot what the fix was for this. User gets an error when sending to a group in her addressbook - "ambiguous user" - the name gets crossed out and the e-mail doesn't go. We checked all her other addressbooks and there are no other objects with the same name. I remember there was something to turn off when we saw this problem a couple years ago, but don't recall what it was and can't find anything in the TIDs.