I can't reproduce your problem. Which version of Ubuntu and which DE do you use? In Raring, as I said, the blank windows only appear when trying to use alt-tab or shif switcher to choose an application where more than one instances are already in use (but minimized)
Hi Andre,
I can't reproduce your problem. Which version of Ubuntu and which DE do you use? In Raring, as I said, the blank windows only appear when trying to use alt-tab or shif switcher to choose an application where more than one instances are already in use (but minimized)