Will downloading Mountain Lion from Mac AppStore resume if I restarted/shut down the computer? I'm about to download OS X Mountain Lion from Mac AppStore, and I wanna know if downloading Mountain Lion will resume if I restarted/shut down the computer?!

Thanks...
Muhammad.
I'm not sure if this is done automatically when shutting down, but you can manually pause downloads in the purchases tab:



The Mac App Store allows to pause and resume downloads.

Also see the Apple support documentation:Mac App Store: How to resume interrupted downloads