Just got a dialog telling me that a minor update is available.
I told it to go ahead and update.
Download seems to have been successful, but after a while the installation stalled.
Right now this dialog is open for about 5 minutes with one CPU core fully utilitzed.
Once in a while it flickers and seems to display another text for a fraction of a second: update.png
This is on German Windows 7 Professional 64 Bit. I have Admin rights and UAC is disabled.