Every time Microsoft updates Windows 7 it causes new problems on what's been a relatively stable Dell XPS8000. The latest update causes my DVD / CD drive (HL-DT-ST DVD+-RW GH50N ATA Device) to be inaccessible! By running System Restore I've brought it back from the 'bit-bucket', but I'd really like to update the OS without having the updates screw something up. Any ideas? Anyone??? Previous updates have caused printer problems; Mouse problems (both running on USB ports); etc.