"Mouse and Keyboard-Settings" Window hides at first "click" without any changes

[Pfundrabui]

"Mouse and Keyboard-Settings" Window hides at first "click" without any changes...

ProblemType: Bug
DistroRelease: Ubuntu 11.04
Package: lxinput 0.3.0-0ubuntu4
ProcVersionSignature: Ubuntu 2.6.38-10.46-generic 2.6.38.7
Uname: Linux 2.6.38-10-generic i686
Architecture: i386
Date: Mon Jul 18 17:55:48 2011
ExecutablePath: /usr/bin/lxinput
ProcEnviron:
 LANG=de_DE.UTF-8
 SHELL=/bin/bash
SourcePackage: lxinput
UpgradeStatus: No upgrade log present (probably fresh install)
XsessionErrors:
 (gnome-volume-control:1509): Gtk-CRITICAL **: IA__gtk_tree_model_get_iter_first: assertion `GTK_IS_TREE_MODEL (tree_model)' failed
 (transmageddon.py:2380): GStreamer-CRITICAL **: Bus bus1 has no signal watches attached
 (transmageddon.py:2380): GStreamer-CRITICAL **: Bus bus4 has no signal watches attached
 (process:6628): Gtk-WARNING **: Locale not supported by C library.