[apport] gnome-theme-manager crashed with SIGSEGV in strcmp()

Crashed when browsing through options in Theme Details. This problem continues to prevent me from having access to Gnome ambient: nonetheless, I continue being able to access to it in Root mode, still. Thank you.

ProblemType: Crash
Architecture: i386
Date: Sun May 6 19:45:53 2007
DistroRelease: Ubuntu 7.04
ExecutablePath: /usr/bin/gnome-theme-manager
Package: gnome-control-center 1:2.18.1-0ubuntu2.1
PackageArchitecture: i386
ProcCmdline: gnome-theme-manager
ProcCwd: /home/bebo
ProcEnviron:
 SHELL=/bin/bash
 PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/bin/X11:/usr/games
 LANG=it_IT.UTF-8
 LANGUAGE=it_IT:it:en_GB:en
Signal: 11
SourcePackage: control-center
StacktraceTop:
 strcmp () from /lib/tls/i686/cmov/libc.so.6
 ?? () from /usr/lib/libfontconfig.so.1
 ?? () from /usr/lib/libXft.so.2
 ?? ()
 ?? ()
Uname: Linux Bebos-laptop 2.6.20-15-generic #2 SMP Sun Apr 15 07:36:31 UTC 2007 i686 GNU/Linux
UserGroups: adm admin audio cdrom dialout dip floppy lpadmin plugdev scanner video