[Adobe Acrobat Professional 9]

Patches for Adobe Acrobat Std and Pro can be found here:

http://www.adobe.com/support/downloads/product.jsp?product=1&platform=Windows

As of 12th June 2009, the latest patch is 9.1.2, which can be applied on top of 9.1 or 9.1.1. To fully update, grab the 9.1 patch (119MB) and 9.1.2 (35MB), and then chain them (see command-lines section).