Comment # 1 on bug 1157425 from xiaoguang wang

There are errors in journal log:

Nov 20 10:02:53 susetest gnome-control-c[2580]: GError set over the top of a
previous GError or uninitialized memory.
                                                This indicates a bug in
someone's code. You must ensure an error is NULL before it's set.
                                                The overwriting error message
was: Failed to execute child process ���usermod��� (No such file or directory)
Nov 20 10:02:53 susetest gnome-control-c[2580]: [45B blob data]
Nov 20 10:02:53 susetest gnome-control-center.desktop[1801]: munmap_chunk():
invalid pointer

It's something like command "usermod" can't find. We need to make sure whether
command "usermod" exist.