Kasia configured her Movable Type installation to run under mod_perl.
I've done that too since I installed the 2.0 beta I got Ben to give me ("I get beta; you get patches?"). :-) Yes, it rocks. If Kasia had followed the detailed documentation for properly configuring Movable Type under mod_perl she wouldn't have trouble with having to move anything. It would also have been faster than using Apache::PerlRun. :-)
On my endless "to do list is to make Movable Type run the templates dynamically instead of doing the site rebuild thing...