I recently purchased Adobe Design Standard CS4 from Academic Superstore. I saved $20 or so by not getting a DVD of the software because I was told I could download it all online. I went and did that, installed all the software and then went to activate it with the serial number they gave me. As it turns out, only Photoshop, Illustrator and InDesign work that way.
Acrobat, however, has to be installed from a special volume licensing CD. The almost-understandable English speaker that helped me insisted this was the case with all 4 software packages, but it clearly wasn’t as I’ve been using them for weeks now without problem. It’s just Acrobat that had the problem. So Adobe is shipping me a CD to install Acrobat so I can get the full working copy. So bizarre.