Recovery Disc started and I clicked through anything but no, I haven't actually tried to restore my system. But at least my data is secure that's enough for me until the update is released.
I upgraded two machines to Win10, both times, I've got the licensing problem.
This is fixed after reinstallation from DVD with Version 11.0.0.46600. If you run Live-Update afterwards, the licensing problem is there again. So an older version is full...