Hi all, I'm a fairly new Mac user as I got my first one (Macbook) two weeks ago. I love it. Its great. Its wonderful. OS X is amazing... but I've noticed something that isn't necessarily a problem..just weird. I've noticed at least twice that if I have an application open and exit out, though not quitting it (it still shows in the dock w/ the arrow under it indicating its open) i am unable to get back to it. This has happened with quicken as well as mplayer (allows me to play avis as quick time nor windows media player for mac won't let me do)... any advice or suggestions? is this semi-common? again, it's not really a problem, all i have to do is quit it and reopen it. just curious. thanks!!