I should warn you that this post has no bearing on the fact that MT's team launched TypePad, a product that is in the same category as Tabulas...

As a server admin, I have issues with my free server spiking up in CPU and memory usage. Its a pain because the spike usually queues up a huge backlog of httpd and mysqld requests and this in turn usually leads to httpd crashing (i know, i'm a horrible server admin; sue me).

In any case, I've noticed that in particular, Moveable Type is *incredibly* server-intensive. True, it may be the best feature-wise journaling software (both paid and free), but DAMN does it use a crapload of memory. I was watching the server today ... and check out the screenshot below. This went on for about 3-4 minutes and server load spiked up above 7 multiple times (you're not recommended to go above 12).

I guess MT isn't very memory and cpu-friendly ... the price of good software, I guess :)