CMS recommendations?

[Michael Hipp]

Can anyone recommend any CMSes (content management systems) I should 
evaluate?

I'll be using it for my own stuff as well as providing it to clients as 
a way to keep them off of FrontPage (yech!).

Needs to run with Linux and Apache. I'd prefer it was based on 
PostgreSQL and Python but I'll probably end up with MySQL and PHP or 
Perl. (Not that such is some great hardship.)

I've figured out that the CMS world is more diverse (splintered, 
fragmented) even than the world of Linux distros. For a glimpse at the 
available options, scroll all the way to the bottom of this page:
http://www.cmsmatrix.org/matrix .  Pass the aspirin.

Michael