When applying SP to SQL Server you need to be careful, I mean really, with planning and attention to every step and especially to errors if any appear.
While I know perfectly the meaning of this sentence I was not as careful as needed applying the SQL Server 2008 R2 SP2, because it was on my laptop, and I did couple of other things meanwhile including listening to my baby girl first songs
So I run the SP2 installation, went trough the Wizard and started the process. I even forgot to close the SSMS and the installation process kindly reminded me that it didn’t have control over SSMS. OK, so I closed it and started the patch again. After several minutes I saw the lovely green icon and the message of successful installation. Great! One more task from the checklist is done, while of course thinking about completely different thinks and watching my baby’s first steps! BUT when I started the SSMS and tried to login the “nice” messages came in.