On last Feb 7th I got a WIn 7 critical update; as usual, the updating process started at shut down and lasted many hours. At the following system startup, which also lasted long, I experienced a lot of malfunctions, even when using system functions as Computer Resources, or EXCEL and VBA applications, all of them entering in a "not responding" state. Problems seemed to be concentrated on an external USB storage device (Seagate Expansionj USB device served by Microsoft 6.1.7600.16385 driver), since the saving function of an Excel file resulted in a complete destroy of the file itself. I tried hardly di roll-back the system to a previous restart check-point. When I succeded, the system returned to a ok status, ad a disk check function returned positive result. Did anyone experience a similar situation? Any suggestion on what shoud I do with next Windows upgrade (if any)?