Hello,
I am using the Decor8 beta (1.05) and Win8 64-bit. Today it happened that the lock screen did not have that clock display and I could not do anything, it just showed the photo I had selected and the cursor was that stupid circle. I could not login the C-A-D did not do anything, so I had to do the hard way with power button.
I must say this was my first time, so this could be an isolated problem, but it would be nice to know if others have had similar issues.