Thank you for the translation! Unfortunaly it seems debconf-updatepo chocked on the special character in the word "geïnstalleerd" so I replaced it with simple "i".
File committed in http://anonscm.debian.org/cgit/pkg-mysql/mariadb-5.5.git/commit/?id=b72553133b8086b270e4e9d0cd825d33ec07d58c -- To UNSUBSCRIBE, email to debian-bugs-dist-requ...@lists.debian.org with a subject of "unsubscribe". Trouble? Contact listmas...@lists.debian.org