May 12th 2015 Windows Updates Security Bulletin Details

Got the updates today. All installed, including 2 optional ones. No problems.
(But I do them in batches, not all at once)

That's one thing I forgot to do after getting a clean Event Log. No problem here after the updates and running all day.

Same here, all downloaded, sfc is clean

Got 13 updates but on reboot got a "Microsoft-Windows-Kernel-Power ID 41 (63), hard reseted and back to desktop fine. SFC was clean.

Well, I installed the updates that failed through control panel and restarted and the rest installed.

There have been some reports that KB3022345 can cause corrupted files (after checking with sfc /scannow). I'm checking to see if this is my problem. It's talked about here
After latest optional update KB3022345 sfc /scannow gives - Microsoft Community
and here
Windows 7 update (KB3022345) causing corrupt files

mjf said:

There have been some reports that KB3022345 can cause corrupted files (after checking with sfc /scannow). I'm checking to see if this is my problem. It's talked about here
After latest optional update KB3022345 sfc /scannow gives - Microsoft Community
and here
Windows 7 update (KB3022345) causing corrupt files

Well because of the whole thing with the Windows 10 related updates, I don't install optional updates as much as possible unless I need to update a driver. And, since they are OPTIONAL, in my opinion they are not really necessary and can cause more problems if it is not for you.