Hey windows gods, i got a quota question

I'm making test a in a lab at home right now and i have a Windows 2008 R2 AD with a Filesystem

I also have a GPO that redirect my desktop and my docs to a 'home' folder on the server

I also have a 2gig quota limit


My problem is simple

If i download something off the internet exemple at 24mb file, the quota catches and it says 24mb on 2gig used

But then i took a 2gig movie on my mac, copy it on a USB stick and then on my windows lab test and the quota didnt moved it was still at 24mb on 2gig, and when i logoff my session the quota still doenst catch it but it does get synch on my server.


So my question is, is there anyway to make files coming from different PC count on the quota when i add them to my user account

Thanks