http://coolthingoftheday.blogspot.com/2009/05/story-of-windows-7-and-empty-all.html
Fucking bullshit... I wonder how many other bugs are left in the RC... is this still in the RTM?  This happened to me after using the RC for 3 or 4 months.  If I add up everything in my All Programs from both All Users and my username I have over 100 items.