cannot install mysql OR postgresql

[pumpapa]

When installing mysql, synaptics complains that that requires mysql-client (4.0.24-10ubuntu2.3) which again requires libreadline4. I have libreadline5 installed and can not remove it because just about half of my packages require it.

Postgresql CAN be installed, but when installing php5-pgsql I get:
php5-pgsql:
Depends: phpapi-20041030
Depends: php5-common (=5.0.5-2ubuntu1.4) but 5.1.2-1ubuntu3.2 is to be installed


I have no idea how to proceed. Any help would be much appreciated.

--Pum

[pumpapa]

The problem is largely the Synaptic Pacakge Manager which adheres to strict (version based) dependenciess.

Installing mysql directly from/following http://dev.mysql.com/doc/refman/5.0/en/installing-source.html seems to work fine.