While it's not unreasonable that a free RC will stop working on a given date, it's amazing to me that the software will shut down every TWO HOURS beginning THREE MONTHS before the expiration. As far as I'm concerned, that makes the RC non-functional beginning March 1, not June 1! Talk about a velvet hammer. From a Microsoft TechNet email: Windows 7 Release Candidate Expires June 1, 2010 - Shutdowns Begin March 1 If you are still running the Windows 7 Release Candidate (RC), beginning March 1, 2010, your PC will start to shut down every two hours in preparation for Windows 7 RC expiration on June 1, 2010. To avoid interruption, you will need to reinstall an earlier version of Windows, or the final, released-to-manufacturing (RTM) version of Windows 7.