ppl have said this and that about both Nero7 and its earlier version...I've had a few 'problems' myself over time (along with 'problems' with many apps) and in the end run (when I know for a fact it once worked just fine) I usually end up reformatting my drive and starting all over again with a clean slate...its the surest way of dealing with corruption of your OS and its attachments (read software)...