Like many others, I experience drastically increased shutdown times after my Lion upgrade... it went from 0 or 1 spin of the spinner to like around 15 consistently. Based on someone else's experience posted on the apple boards, I ended up deleting everything from my Login Items in the user sys pref, and everything in <HD>/Library/StartupItems. Shutdown times went back to zero spins... yay! I then put things back one at a time, and tested shutdown with each. So far, I've got gfxCardStatus and growl back in with no probs. The HP Tray Monitor folder I removed from StartupItems, I just left out, since I have no idea what it does! I don't know know if it's the culprit, but I'm not missing it yet. Update: this indeed was the culprit! I put it back in and shutdown went back to 15 spins, took it out again and it's back to instantaneous! So far so good. Shutdown down to almost instaneous, and startup is 0.5-2 spins.