Windows freezes when copying files

Hi folks,

Got a weird problem that happens when I try to copy files over my network to other PCs. It just freezes when I copy large files!

For example, I tried to copy the Windows beta ISO over to my 2nd computer and the computer just froze. I waited a few minutes but nothing happened so I had to press the reset button.

Is there anything I can do?

Are you using a Virus Scanner in the background? AVG seemed to make mess up large file transfer for me (I assume while it was scanning them), but it never got so bar that I needed to restart.