Comment 2 for bug 1060171

StacktraceTop:
 g_hash_table_lookup_node (hash_return=<synthetic pointer>, key=0x2e0056d, hash_table=0xffc35732ffe9673b) at /build/buildd/glib2.0-2.34.0/./glib/ghash.c:401
 g_hash_table_remove_internal (hash_table=0xffc35732ffe9673b, key=0x2e0056d, notify=1) at /build/buildd/glib2.0-2.34.0/./glib/ghash.c:1269
 event_filter_func (gdkxevent=<optimized out>, event=<optimized out>, data=<optimized out>) at /build/buildd/compiz-0.9.8.4/gtk/window-decorator/events.c:1102
 gdk_event_apply_filters (filters=<optimized out>, event=<optimized out>, xevent=<optimized out>) at /build/buildd/gtk+2.0-2.24.13/gdk/x11/gdkevents-x11.c:356
 gdk_event_translate (display=display@entry=0x1bff020, event=event@entry=0x1d0ddc0, xevent=xevent@entry=0x7fff6ad552d0, return_exposes=return_exposes@entry=0) at /build/buildd/gtk+2.0-2.24.13/gdk/x11/gdkevents-x11.c:946