If you are still running the beta version of Windows 7 you should start getting your upgrade plan ready. So you can at least upgrade (or reinstall) your machine before July 1st. This will be the date that your pc start rebooting every 2 hours, until August 1st. At August 1st you’re unable to use your Windows 7 Beta….
So please upgrade to the Release Candidate version of Windows 7 and enjoy the fast, reliable and good looking operating system until the RTM will become available (in just a month or so).