I also had a less than ideal experience while playing with Unbox. During setup it asks for your username and password, but does not verify that they are valid.

I also had a less than ideal experience while playing with Unbox. During setup it asks for your username and password, but does not verify that they are valid. I mistyped one, and as a result it was unable to download the item I had purchased. This wouldn't be a big deal except that there is no way to change your username and password through the software. I finally figured that the only way to change them was to uninstall the software and then install it again. Unfortunately, the uninstaller is not smart enough to kill the Unbox process before attempting to uninstall, so it hangs indefinitely. I had to make sure Unbox was completely dead before the uninstall would work. In short, it took much longer than it should have to purchase and watch a video. And all of my troubles could have been avoided with either a simple verification during setup, or an option to change the password somewhere in the software (this may be missing because of DRM restrictions). The quality of the video was fine, and the download was reasonably fast. The user experience was terrible, as was the UI for the Unbox software. My parents (smart, but not terribly computer savvy) can purchase and enjoy media via iTunes. They would not be able to use Unbox.