ok this really is a resurrected thread now
Wordpress / Movable Type / Textpattern
dropping textpattern though as its a bit of a DB hog I find with all the queries (could be an issue with the host its on as well though)
Wordpress does have a caching plugin but I've not used it just yet. I will be though shortly.
Once you realise wat Movable Type is doing though its pretty amazing
and I'll say a lot of people will be switching.