Quicktime open in Activity Monitor, but not on dock
I've been searching to find what's been dragging down my performance and have been watching which applications are open and sucking resources. I've noticed that while the QuickTime icon in my dock is NOT highlighted as open (with little triangle below it), when I go to Force Quit applicaitons, QuickTime is listed as open and I am able to force quit it.
I've searched my HD for Quicktime, and only find that one application plus the older QuickTime Player 7 which I open infrequently to do editing on. I can't find out where this open quicktime application is hiding in my filesystem. When I click on the icon in the dock, it opens with triangle under it. When I close quicktime, it looks as if it's been shutdown but alas it shows up in the force quit window as open.
I've also had this problem with Preview and Calendar so far. I haven't checked my entire dock, but those stick out as doing the same thing.
What's going on? Do I have multiple applications that DONT show up in Spotlight search or when searching in Finder? Is there a way to ensure there is only one QT app on my HD?
Thanks for any imput!
2.66 GHz Intel Core 2 Duo iMac, Mac OS X (10.7), 1 Tb of storage