In lieu of the automatic download, I prefer to go to Adobe.com and do a manual download so that I can save the file in case of a future reinstall.
There are two options presented for the 5.0.2 upgrade: (1) upgrade for electronic download, and (2) upgrade for DVD installation. The two options link to files with identical names and file sizes. However, the options appear to be mis-identified as the (1) link takes you to a page that is entitled "CS5 5.0.2 upgrade for electronic downloads"--but the first paragraph ends with "This update applies to DVD installation...". Link (2) does just the reverse.
(1) what is the correct version for a 5.0.0 installation from DVD with a 5.0.1 upgrade from electronic download?
Rather than wait for an employee to come along and then give your "mixed description" information to whoever does Adobe's web pages, you might gather your information and go to
Bug Report and Feature Request https://www.adobe.com/cfusion/mmform/index.cfm?name=wishform
In a very recent post, Sheri mentions this. Adobe is correcting a little mistake. I'd give them a bit of time, and then go back and check.