I am having hte same problem as the user her:
http://forums.adobe.com/message/4162744
I'm using Adobe CS 5.1. When Adove reader is open, I get the message:
<quote>Adobe Acrobat Updater has not been able to check for updates recently. Check online to see if solutions are available from the Adobe website.</quote>
The Adobe website is pretty big. Where do I check? (Like searching Rhode Island for a person, would be nice to have a more refined tip on where to look).
Ed Dressel
You can manually access the updates at http://www.adobe.com/downloads/updates/.
North America
Europe, Middle East and Africa
Asia Pacific