Bug#535247: Some more diagnosis

[Tixy]

This looks like a bug which is being investigated by the Gnome people in
https://bugzilla.gnome.org/show_bug.cgi?id=598211

I can confirm that when reproducing this on my Debian Testing install
"xsmp->priv->conn" is NULL in xsmp_stop (in gsm-xsmp-client.c.); and
that the crash doesn't happen after applying the hack in
https://bugzilla.gnome.org/show_bug.cgi?id=598211#c27

Note, the Gnome devs are working on a better fix.

Also, I reproduced the problem by using GKSU, perhaps there is a bug
with that which needs addressing? (I don't know if its meant to cause
the state which was causing Gnome session problems.)

-- 
Tixy