id summary reporter owner description type status component version resolution keywords cc guest host 9262 Aero still does not work well komanek "Hello, I upgraded to VB 4.1 (on Fedora 14 host box) and installed new guest additions in my Windows 7 SP1 (64-bit) guest OS (the new video driver enabled). Although I can switch to an aero theme, there are not other things working: - no transparency - no window thumbnails - win+tab key combination is not working - windows user experience score calculation ends up with an error " defect closed WDDM VirtualBox 4.1.0 fixed Windows Linux