This one certainly is new. When exactly did this happen? Did it go away after you refreshed, or did it linger? If so, how long? I have been unable to find any mention of this anywhere, so it may be a little-known bug. It would be helpful to know when this first started, and whether it has been there since the upgrade? I have not personally seen this. I will keep a close watch up to see if any mention of this is made on the bug report boards. Perhaps it is an easter egg.

~ Traft