i have also submitted a case, #11420097
Our scenario is a follows. so far only a handful of machines have been affected. all have had issue booting. they start, get to the loading screen but never reach the ctrl+alt+del screen.
it is important to know that all clients were upgraded from 12.1.6 to 14.
booting in safemode does work (except for one that we could not get to boot into safe mode)
we added a reg key to allow windows installed to start in the safe mode environment and removed the sep 14 client. the pc was then able to boot successfully.
i am running windows 7 ent x64 on sp1 with the most recent MS updates as November's patch tuesday (to my knowledge)
office 2010 x64 as well. i still have GEM enabled because on of our tests before removing the sep 14 clients was to disable GEM. however, unchecking the box for that client did not allow a normal boot.
so far, removing and pushing a fresh copy of the sep 14 client has not seen the issue reoccur in the machines.
i have been unable to determine what causing the issue. any insight from anyone else whould be welcomed.
thanks
ian