Running Ubuntu 12.04 with Gnome Shell 3.4. After enabling Bottom panel extension (to remove annoying Message tray/bottom panel/hot-corner at the bottom; You know what I am talking about(: ), still a "half" message pop-up after adding USB drive. Well, sorry, dont know how to explain it correctly. Maybe someone have any clue how to solve this thing and get rid of that?
Here is a screenshot: