On Thu, Mar 25, 2010 at 8:25 PM, Tom H 
<tomh0665@gmail.com> wrote:
It is a feature! ;)
There's probably Windows backup software on it; and who knows what else.
Helpful post from Tom, I've done similar but only on Sandisk products.  I thought U3 was only a Sandisk thing but now WD is using it too?
Some of the Windows software Tom H mentioned and shown 
here makes me skeptical at best.  I just get rid of U3 by deafult now.