Issue with installing MariaDB on Debian Squeeze?

read the error :)
Design your packages, it asks, can one command.

try to put the packs on which he swears separately. The last screen says that the package "mariadb-common" virtual, and it looks like it is included in the package mysql-common

Everyone, especially thank you! The problem is solved, the nail was in the "extra" repositories, or if you alter the priorities Repov. It is sufficient to clean out all the excess.