From Bugzilla Helper:
User-Agent: Opera/7.54 (X11; Linux i686; U) [en]
Description of problem:
When the kde panel properties are edited the existing icon is lost.
This tends to only happen the "first time" the application button is
Version-Release number of selected component (if applicable):
Steps to Reproduce:
1. right click on an application icon on the panel
2. select "properties"
3. select the "application" tab
4. erase the "description" so that "tool-tip balloons" display
5. select "ok"
Actual Results: Existing application icon on panel is now replaced
with "question mark" icon.
Expected Results: Leave the application icon the way it was - keep
the existing icon.
it's fixed in kdebase-3.3.1-11. It will show up in rawhide soon.
Thanks for your report.