I am running WindowBlinds 7 and have a problem with maximized frames that leave a thin white margin (Acrylic) at the top or show a thin slice of the desktop. Not all the styles show this problem with Adamant, Vista Plus 3 and Concept 2009 being good examples. Aero and variants do not suffer from this problem. I have recently purchased Alloy and this also displays this problem. regards Vernon.