Macintosh dealers and Apple Stores are being inundated with customers looking for the free Mac OS 10.1 upgrade. A check of Apple Stores in Tysons Corner, VA, Tampa, FL, Columbus, OH and Peabody, MA revealed that all stores ran out of the upgrade. The Tysons Corner location had more than 200 customers lined up outside the mallstore at 07:00–three hours before its opening–to get their hands on theupdate, and were out of stock within an hour, a store employee told MacMinute by phone. Many independent Mac dealers, however, report having some stock of the upgrade still available.