Thanks for the update.
When I log into my admin area, at the bottom of the page, on the left hand side it says: Thank you for creating with WordPress MU 2.8.4a.
However, on the same line, on the right hand side, it says:
You are using a development version (2.8.4). Cool! Please stay updated and links to download the latest version.
In the actual blog the generator is:
What gives? Do I or do I not have 2.8.4a?