No, I just did a basic setup with Decor8. I just setup a different (non-default) background for the Windows 8 Menu.
Today the problems returned with Decor8 uninstalled. I then did a system restore to a point in time before Decor8 was originally installed. I want to see in something was changed to the registry that remained when I uninstalled Décor8. I am again waiting to see if the problems recur. I'll keep you posted.