Cannot quit iTunes in OS X Lion Every time I try to quit iTunes (⌘ + Q) in OS X lion I encounter some strange problem and after some seconds I find it has run itself again!   

If I use ⌘ + Tab I see iTunes in my running application.

Why could be causing this and how do I stop it?
I’ve experienced that kind of behavior from iTunes when an application keeps a connection to iTunes’ AppleScript interface open – whenever iTunes tries to quit, the open connection forces a restart. Are you running any kind of tool or app accessing iTunes? Menu bar control apps, sync solutions, or maybe an audioscrobbler? If yes, try to quit that first and see if iTunes quits cleanly after that.