iTunes Helper still running even if it is off
iTunesHelper will run if you open iTunes, or do something that opens an iTunes service.

The only way to completely disable iTunesHelper is to…


Quit iTunes and remove iTunesHelper from Login Items.
Go to /Applications/iTunes.app/Contents/MacOS/

You can use Finder's Go to Folder to go there - paste in the path as above.

Rename iTunesHelper.app to something else (e.g. iTunesHelper-disabled.app).


iTunesHelper should not run automatically now.