I have run Canon MF4150 on Vista 32 without any problems for more than a year - until last week's Windows Update. Integrated printer still works fine. But when I try to use the scanner, I get the message from MF Toolbox that there is no supported scanner installed. System restore puts everything back to normal, and there is no updated driver available. Can't do a system restore every day, and I don't want to turn off Windows Update. Any ideas please?