A new round of OCS 2007 R2 updates are available for download.  Here are the components that were updated for this round:

Server Updates (6907.225) – KB 968802

Note:  As always, the easiest way to make sure your server is up to date across all components is to use the Cumulative Server Update Installer (ServerUpdateInstaller.exe package)

Group Chat Server (6907.225) 

Client Updates