I confirm the bug. The description is accurate. Kubuntu 6.06 camera Canon A520 I found many posts in ubuntuforums.org with the same problem. They concerned different camera types.
-- USB Camera not handled properly in KDE https://launchpad.net/bugs/48717 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs