This Windows Updade (KB267083
dont cause problems in CLoD itself.
Cause problems with programs that use overlay like SeewtFX, FlightFX...
They are the culprid for freezes in CloD.
Users that dont use this programs report no issues after KB2670838 install.
KB2670838 maybee cause problems with TS notifier, Fraps - even with another games.
There's report of problem with Firefox fonts, MS IE printing...
On the other side I have the impression that colors in CloD are improved after
this update...
Sokol2