I just got my rMBP but I have a strange problem. If I shut down the laptop while iTunes is active and leave the default "restore windows when logging back in" option ticked, then the menu bar (and the associated apps) loads very slowly (~20 seconds after the desktop appears). If, however, I shut down iTunes and do the same thing, the menu bar loads much more quickly (~5 seconds) when logging back in. It appears that iTunes is the culprit. Any suggestions? Currently I'm using a script together with a keyboard shortcut to shut down iTunes before shutting down the computer. Any suggestions?