Look like this bug is somehow related to quiet annoying LP bug 1075928:
"Gdk-CRITICAL **: IA__gdk_error_trap_pop: assertion `gdk_error_traps !=
NULL' fail" console message on every GTK+ app start in KDE and probably
all other non-GNOME DE.
Can anybody tell if unsetting GTK_MODULES is proper solut
** Description changed:
The session script in /etc/X11/Xsession.d/52libcanberra-gtk-module_add-
to-gtk-modules sets up GTK_MODULES, but it should only be set when
logging in GNOME.
+
+ One consequence of the current behaviour is that for instance attaching
+ a file in a message in thunderb
