Not in any order ...
1. Putting all his eggs in the Asomough basket and losing.
2. Signing a massive malcontent to a 50 million dollar contract
3. Signing a bad QB to a huge extension for no reason other than to settle said QBs nerves.
4. Trading away too many picks at the expense of depth
5. Vernon Gholston
6. Wayne Hunter
7. Derrick Mason
... Keep it going ...