Communicator 2007 demands an Outlook Update?

On my personal Machine (and all other machines in my office, running Vista and Office 2007), Communicator 2007 has been demanding an Outlook update since i’ve installed it (Outlook-Update erforderlich). Clicking it leads to this empty Microsoft page.

I have no idea why it demands this, because i’ve installed all the Office 2007/Outlook Updates there are, and even more funny I only found a single reference to this problem (this newsgroup posting).

The suggestion in said post was to contact Microsoft Support, which i’m not allowed to do. The problem does not exist on the Windows XP machines running Office 2003 (we don’t have any machines running XP/Office 2007). As such, i’m stumped.

Does anyone else know this problem?

Update: According to this post in the OCServer Blog, this icon works in English Environments and should remind users to install KB936864. However, i do have this package installed (according to systeminfo).