When clicking on a break point in the break points overview window, I was used to only selecting the break point, after which actions could be performed on the selected break point(s).
Recently, after we switched to using KDE as window manager, the break point is not only selected, but the cursor jumps to the corresponding code line in the editor window. When pressing <DEL> to delete the break point, the break point is not deleted, but the first character of the code line in the editor is delete.
This problem should be fixed by Eike Ziller, and I downloaded Qt 4.9.1 beta build 20,
The problem seemed to be solved but only when in edit mode. But after starting a debug session, the problem is still present.