Well, at home-office I develop on an local Debian 4 Etch.
In knowledge of this "old" system, I sat up a new fresh Debain 5 Lenny.
During the installation of MODx Rev Beta 5 the setup said, the MySQL-Client 5.0.51a is buggy.
But in the stable branch of Debian Lenny the highest MySQL-Client is 5.0.51a-24.
http://packages.debian.org/stable/mysql-client
Serveral times I try to install an other MySQL-Client (backports and testing branches, too) -
without success.
Now, I change my development-system to ubuntu (with the same package-management "aptitude" as
Debian). Now, ubuntu contains "up to date" packages - so as MySQL-Client, too. The install of
Revolution was without problems and now I can try the new MODx.