The download problem is not unique to Vista. I have had it happen to me on
both Vista and XP. The "fix" I used was to clean the browser history and try
again. Usually it works. Also it seems to require admin privileges just to
load (At least I've been forced to run as admin every time it stopped
working) the installer. Could you tell me if you get a " instead of the
"install successful" bar when the install fails to load? That's what's
happening to me.