Check this out...
http://www.technomagik.net/test/index.php
I've made significant progress with my MySQL/PHP/XML/XSLT/XHTML project, and have now passed the first milestone: Loading a (prototype) front page from MySQL to an XML page, then transforming it to XHTML using an XSLT stylesheet, all scripted with PHP.
If that's not acronym overkill, I don't know what is.
Right now, the test site is more of a proof-of-concept than anything else. The next step is to implement topic icons, messages, articles, and write a basic administrative interface for site configuration, adding blocks, articles, messages, topics, etc. Milestone 2 is a bare-bones but fully functional site with web-based administration. Once that's complete, I will be cleaning things up and releasing a 1.0 version of the software (currently named "xml-weblog"), probably under a BSD license, and probably open up the project CVS repository to the public. Until then, check out the test site, and please let me know if you find bugs!