Storing in the wrong place?
Literally today I've had that old chestnut of <user's mailbox is getting full>, user requests more space, I take a quick look at his mailbox and 2/3 of it is in "Deleted Items"... I suggest emptying that, and am faced with the response that he's "keen to keep hold of his deleted items for now"...
Fine - he has a cost centre, and I'll tell them the cost.
Do I win a beer? Please?