They should create a browser that uses a selected allocated partition on the HDD, so if you do get viruses, they would only affect your selected section on the HDD, and you could just reformat that partition. The third Xbox will have lots of improvements, and I wouldnt be surprised if IE9 came to the third Xbox, that way they could also give more incentive to buy a bigger HDD to download videos off of the web and also buy text chat pads for browser input.