This isn't another "Failed to apply patch" thread. But I have a new issue I've never had before. While downloading the patch, my computer will lock up randomly and I am forced to reboot and start the download again. I really doubt its a performance issue, I have tried running it with only the vital background apps running, and I'll still lock up, get frustrated, and reboot again.

-Anyone else having this/similar issues? I've never had anything like this before.
-My computer only locks up while Blizzard Downloader is running and downloading the latest PTR patch.

Any help is greatly appreciated in advance.

EDIT: Running Windows Vista 64-bit Home Edition, running everything as administrator