Apple - iTunes keeps starting automatically

com.apple.launchd.peruser.501[149] - looks to me like some process is using launchd as user 501 to open iTunesHelper. The PID in brackets is the culprit. What's process 149?

launchctl list will tell you what's loading via launchd. Check the list; if you see any plugins or helpers you know you removed, kill them with launchctl remove name.of.process

Two other things to try: You keep getting error messages about Mux IDs not existing. Kill all the items in the Mux ID list by deleting /System/Library/LaunchDaemons/com.apple.usbmuxd.plist and reboot.

If that doesn't help, trash iTunes and your iTunes plists, then download and install iTunes 11 fresh from Apple.

I've had problems with 3rd-party iTunes extensions not keeping up with iTunes updates and causing all kind of weird behavior. In order to figure out if a plugin or extension might be involved, try starting iTunes up in safe mode:

http://support.apple.com/kb/ts3430

If the odd behavior goes away, then it's just a matter of figuring out which extension is the culprit.

I do know that an infrared remote can start iTunes if the "play" button is pushed. Have you looked into this possibility?

To disable all infrared remotes, go to System Preferences -> Security and Privacy and click the "Advanced" button at the bottom of the window. Then check the box labeled "Disable remote control infrared receiver".

To ensure only a specific remote that you trust and control is used with your computer, use the "Pair..." button in the same sheet, to pair your computer with a remote.

IF... you wanted to temporarily test this, without disabling anything, you could place a piece of electrical tape over the IR receiver on the front of your computer. You know... just to make sure that nobody in the office is jacking with you.

Bill