mysql update on opensuse

mysql update on opensuse References When running openSUSE 12.3, the updater pops up with mysql/mariadb updates available. Being a trusting person, I always update whenever any update is offered. I have spent the day regretting this decision. I have found that when the mysql daemon is started it promptly changes the file permissions of some very important files and directories. For instance it changes the owner and group to mysql:mysql for the directory /usr, /usr/bin and all the files in /usr/bin. This impacts the system dramatically, like not being able to use su or sudo. Also found that it did similar things in /etc. I have disabled the system starting the mysql daemon and am now trying to repair the damage. Can anyone tell me how to stop this behaviour as I am now reluctant to start the daemon again as I suspect it will change all the file permissions back again.