I ran their "update preparation" thingy already twice, and a fix tool from micrsoft that reported to have fixed stuff, but didn't (running it twice produces same "i fixed this" messages)
Eventually I ran SFCFix
----------------
SFCFix version 2.4.1.0 by niemiro.
Start time: 2014-09-01 17:13:26.841
Not using a script file.
AutoAnalysis::
WARNING: Manifest damage on component "amd64_microsoft-windows-i..timezones.resources_31bf3856ad364e35_6.1.7601.22750_de-de_3904c891c2c9c516". See CBS logfile for more details.
SUMMARY: Some corruptions could not be fixed automatically. Seek advice from helper or sysnative.com.
CBS & SFC total detected corruption count: 1
CBS & SFC total unimportant corruption count: 0
CBS & SFC total fixed corruption count: 0
SURT total detected corruption count: 27
SURT total unimportant corruption count: 0
SURT total fixed corruption count: 0
AutoAnalysis:: directive completed successfully.
Successfully processed all directives.
SFCFix version 2.4.1.0 by niemiro has completed.
Currently storing 0 datablocks.
Finish time: 2014-09-01 17:19:15.488
----------------------EOF-----------------------
The CBS dir (couldn't upload it here out of some reason)
https://dl.dropboxusercontent.com/u/895377/CBS.zip
Help, I'm short before reinstalling the whole system.
