This was by bad design on our part.
The VS 2005 Beta 2 media was shipped on DVDs. SQL was also on DVDs but Team Foundation was on a CD.
Since we didn't label the media correctly, we saw a lot of bugs that the media doesn't work on our customer's machines because they're putting a DVD in a CD ROM.
I've asked our release PM who's in charge of the disk labeling to make sure the final released media prints CD or DVD on the disk.
It's also interesting to see there's still a lot of people out there with CD Roms and not DVD Roms. I guess these days, we take DVD Roms for granted and assume everyone has one. Turns out, our marketing says only 20% of international machines actually have DVD Roms in them.