Looking at the trace, it might be a libegg problem:
#3 0x000000000040c0bf in egg_icon_list_button_press (widget=0x8599a0, event=0x735800) at eggiconlist.c:850 icon_list = (EggIconList *) 0x8599a0 item = (EggIconListItem *) 0x0 dirty = 0
The copy of libegg bits in gnome-cups-manager look very different from http://svn.gnome.org/viewcvs/libegg/trunk/
Looking at the trace, it might be a libegg problem:
#3 0x000000000040c0bf in egg_icon_ list_button_ press (widget=0x8599a0, event=0x735800) at eggiconlist.c:850
icon_list = (EggIconList *) 0x8599a0
item = (EggIconListItem *) 0x0
dirty = 0
The copy of libegg bits in gnome-cups-manager look very different from http:// svn.gnome. org/viewcvs/ libegg/ trunk/