That's just Apple following the Windows developer creedo. That's the way I've seen every Windows application install itself and behave - at least since I started using Windows in 1995. I'm not saying it's a requirement of writing and distributing Windows software, nor that it's not sloppy and gives a poor user experience, but it's par for the course.

At least you know it's downloading and installing at all. Unlike 30% of the software found on your typical Windows internet user's computer (software they don't know about).

Bruno