Ok I am using a M405, whenever I try to close a window (any windows at all firefox, ie, word....) by going to the taskbar, right click it and hit close, instead of closing the windows I heard a "bing" but when I minimize the windows and right click on the taskbar to bring up the menu and hit close then it works. No idea why and can't seem to get my touchpad to respond to the back and forward command (for internet explorer and firefox) no matter what I do. Reinstall and blah blah.... nothing works. I will bother Toshiba later, but I think they will have less clue than any of u guys. I think there is something wrong with the software portion.