@kbc2010, I don't think it the problem with occacional restartes has anyhing to do with the Surface 2 cover.
I have tried to put my Surface pro 2 in "standby" mode with and without the cover and there is no difference to the restart factor. Suddenly I discover that the Surface pro 2 has restarted and after that restart will not go into standy again.
I have also noted that when I turn my Surafce pro 2 completly off, and put it on charging - it is suddenly woken and will not go to sleep agian. This is also tested with and without the Surface 2 touch cover.
It has been noted in other dicsussions also, that this has nothing to do with the touch cover, but has been adressed to the firmware update from december.
Hopefully there will be a fix soon.