PBase

Here are a few links to Adobe's updates and download sites for various versions of Photoshop, RAW converters, etc. from the current version back through early releases. It's nice in that they have the download links for each of the updates.

PS - Windows
http://www.adobe.com/support/downloads/ ... rm=Windows

PS Elements - Windows
http://www.adobe.com/support/downloads/ ... rm=Windows

PS - Mac
http://www.adobe.com/support/downloads/ ... =Macintosh

PS Elements - Mac
http://www.adobe.com/support/downloads/ ... =Macintosh

Main update page
http://www.adobe.com/downloads/updates/