Since this is coming, I thought I would share this with you - if your customers find lots of "genuine" warnings and then rebooting every hour... think about this as a cause :-)  Well, think about the non-genuine license.  That does not mean that the customer has necessarily knowingly bought ripped off software, but it does happen.  You may have recently read about the $500M bust of a piracy ring - they were not giving the software away to their customers - they were selling it as full price product.

Windows Vista's Reduced Functionality Mode

Now, think about it, does that look genuine?

It's not a widely publicised feature, but users of Windows Vista who fail to properly activate their software may find themselves in Reduced Functionality Mode (RFM). In this state, you will be unable to use any of the Windows Vista Premium features like Aero Glass and ReadyBoost, nor will you be able to play any of the built-in games. Tougher still you'll only be able to use the computer for one hour before it automatically logs you off.

The UsefulTechnology Blog: Windows Vista's Reduced Functionality Mode

ttfn

David