Douglas Phillipson wrote:
I think I figured out what is causing my swap problem. I was rotating through a bunch of pictures with the "slide show" feature for my background screen with KDE. After a little while my memory got full and swap fully used. Then memory would release but swap usage remained. So there might be a memory leak in KDE's "Desktop Background" slideshow code. If I disable the slide show it doesn't occur.
Be sure to submit a bugzilla report (bugzilla.redhat.com) so that the problem gets attention. You could also submit a bug report upstream to KDE.