I think this was replaced by "Default Applications", which can also be started by 'kcmshell defaultapplication'.
The componentchooser.desktop is hidden indentionally to not have duplicates, see also https://bugs.launchpad.net/distros/ubuntu/+source/kdebase/+bug/59435 In "System Seetings", which is the default GUI config tool for kubuntu, "Default Applications" can be found under "Personal". -- Component chooser doesn't appear in kcontrol, and doesn't work when run manually https://launchpad.net/bugs/74283 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
