claus - 10:54 pm on Jun 27, 2010 (gmt 0)
I'm using the WP Hive plugin on some (customer) sites for running multiple blogs from one WP codebase/install. I'm almost certain that upgrading to 3.0 will smash the whole setup, and I'm not inclined to give it a go just for the fun of it. Actually it's been a few versions since the last time that collection of blogs was updated. But that's just a symptom of a general WordPress problem:
The WP plugin system is quite a bottleneck for getting people to upgrade. Often the core functionality of a site can depend on a plugin or a series of plugins.
So, when the CMS gets updated there is quite a risk in upgrading, as it might spoil your whole site because some plugin does not work with the new version.
So, even though the plugin system is smart it just may be the most serious security issue with WordPress as well.
I just read the Codex Page [codex.wordpress.org] and it says that the multisite capability of WP3 only goes as far as subdomains or sub-folders. Ie. the blogs must be in subdomains or sub-folders.
So, you can't run multiple blogs with their own separate domain names from one 3.0 install (at least not without some major .htaccess hacking). Too bad, I have no clue why the developers didn't consider that if you want to run two or more blogs you might also want to do so from two or more domain names.