Can I pause the Mountain Lion download and resume it later? My internet service provider has its own broadband portal and the session lasts only 12 hours after which I need to relogin.  While relogging the download of the Mountain Lion gets interrupted because the connection resets.

I'd like to take my Mac to my friend's house for increased net speed. Will the download be resumed or do I have to start downloading all the way from the beginning?
I was just searching for that, and No, you can't, it has to be downloaded in one time only. If you paused; it'll restart from the beginning.

This is the source from Apple Discussions:
https://discussions.apple.com/thread/4139031