Sometimes at startup, kpm doesn't show anything in its process list, and changed items fill in the table as it refreshes. Also, the CPU usage column seems to be broken -- it shows either 99.9% or 0% usage for all tasks (as I look at it now, several are showing 99.9%. This is a UP box, and I know that at least some of those tasks are completely idle, so that should be impossible. :)
This is fixed in the current version.
What is the "current version" and how do I get it? I just installed RedHat Deluxe Workstation 7.1 out of the box (which was only just available for a few weeks now on CD) and I experience the 99.99 figure for any process taking CPU resources. In my case the innitial screen appears correct, with a resonable distribution that would add up to ~100, but all further refreshes show 99.99.
The current version is 2.2-0.alpha2.1, as found in rawhide. ftp://rawhide.redhat.com/ It may take a couple of days until the package appears on ftp.