pink paula theme or unknown theme cannot remove

[pijobejo]

Binary package hint: firefox-3.5

cannot change to other theme

ProblemType: Bug
Architecture: i386
Date: Fri Dec 11 06:31:45 2009
DistroRelease: Ubuntu 9.10
InstallationMedia: Ubuntu 9.10 "Karmic Koala" - Release i386 (20091028.5)
Package: firefox-3.5 3.5.5+nobinonly-0ubuntu0.9.10.1
ProcEnviron:
 LANG=en_US.UTF-8
 SHELL=/bin/bash
ProcVersionSignature: Ubuntu 2.6.31-16.53-generic-pae
SourcePackage: firefox-3.5
Uname: Linux 2.6.31-16-generic-pae i686
XsessionErrors:
 (gnome-settings-daemon:1834): GLib-CRITICAL **: g_propagate_error: assertion `src != NULL' failed
 (nautilus:1936): Eel-CRITICAL **: eel_preferences_get_boolean: assertion `preferences_is_initialized ()' failed
 (polkit-gnome-authentication-agent-1:1958): GLib-CRITICAL **: g_once_init_leave: assertion `initialization_value != 0' failed
 (gnome-panel:1930): Gtk-WARNING **: gtk_widget_size_allocate(): attempt to allocate widget with width -5 and height 24