Is your computer acting strangely today? Could you by chance have Windows 7 Beta installed...?
If so then you need you get your lazy butt moving since today is the well publicised day the first public release of Microsoft's impressive next generation OS begins its automatic shutdown routine.
Users will find their systems will power off every two hours which should prove more than a little irritating - and of course it is meant to be. The Windows 7 Release Candidate has been out since May and Microsoft no longer needs testing for an outdated build. Besides, the RC really is better - trust me.
As for RC users, don't feel too smug. The same will start happening to you from 1 March 2010 with full expiration from 1 June. That said, with a formal Windows 7 launch date of 22 October and some good promotions available to early adopters there's little excuse to wait this long.
Lastly a little tip. Yes, it is a pain not being able to upgrade from Windows 7 Beta to the Release Candidate and the same will be true for those moving from the RC to the released version. That said, make sure to use 'Windows Easy Transfer'. This software is bundled with all flavours of Windows 7 (and indeed on XP and Vista - though in a more limited form) and it will seamlessly migrate your documents and Windows settings (including those for Microsoft Office) from your current machine to your new one (or via a second hard drive).
There really is no excuse not to upgrade...