A bug with Live Messenger on Windows 7

When I am running Windows Live Messenger on this Windows 7 machine, the Start bar shows 2 icons for the application. There seems to be a windows for Me (Available) and Windows Live Messenger.

Clicking either one takes me to the same application. And as far as I can tell, there is only the one application open.

It would be nice if I could just click on the start bar icon and not have to deal with a second menu.