This was driving me insane. I have IMAP set up on my iPod touch and Apple Mail (in Leopard) kept creating a "Deleted Messages" label even though I wanted my deleted messages to go in the Servers trash, not "Deleted Messages". Here's what you do to fix it. I found this website and it saved my day! I'm just sharing it so that people here don't have to go through the same type of thing I did. http://5thirtyone.com/archives/862 Also, there's a tip on how to make the [Gmail] folder disappear. Just go into Settings>Mail>Your Gmail Account>Advanced> Do you see where it says "IMAP Path Prefix"? Just type [Gmail] There and you'll be all set. Also, if you found this useful, say thanks so that I know that I'm actually helping people not just talking to myself... hehe.