It occurred to me that others may be interested in a UT2004 style jump mod mutator. I had downloaded one awhile back but it didn't work quite correctly with the dodge jumps so I modified it and have used it on my own server since. I've decided to post it to the download section under Misc. This duplicates the quad/double-jump and dodge jump boost as in UT2004.
http://www.utstatsdb.com/files/?dir=7
I don't know who the original author was.