After installing Win 2003, i also had to do DWMX. After swearing a bit at the time it takes to save a file i remembered to speed it up you need to goto
Preferences » Invisible Elements and untick "Show Contents of Include file". I don't remeber where i got this, i though it was forta.com but i can't find it now. But i did find there two other tips:

1. DWMX load time - Open in code view only
2. DWMX performance - Don't keep the application window open

I'm sure there was a site with a whole bunch of these, if anyone can remeber it feel free to post.p.s. I still love CFE, but there is something that it just cannot do - YET!