First prognosis from those in the know : you probably do not have to be. That's great news for most of us who depend on the error reporting in Disk Utility to determine if our systems are running the way they should be. Many people have noticed that their permissions checks via Disk Utility after updating to Mac OS X 10.5.6, iTunes 8.1, or other updates from Apple have spit out a laundry list of suspect errors.