The default desktop leaves the user with two panels. When i try to delete any one of the panels, the panel customization dialog as well as the panel itself freezes. To know more about the problem, i tried to run xfce4-panel from the commandline and tried to repeat the same procedure. This is what i get when i delete a panel : (xfce4-panel:4754): Gtk-CRITICAL **: gtk_combo_box_remove_text: assertion `position >= 0' failed (xfce4-panel:4754): Gtk-CRITICAL **: gtk_combo_box_remove_text: assertion `position >= 0' failed (xfce4-panel:4754): Gtk-CRITICAL **: gtk_combo_box_remove_text: assertion `position >= 0' failed (sort of a never ending loop)
Will be fixed in the next beta 1 release . *** This bug has been marked as a duplicate of bug 4401 ***