Nautilus just crashed on me.  I dumped a core from it and installed
gtk2 and nautilus debuginfo packages, and here's what gdb says for
thread 8 (which is the one that crashed):

#0  0x003dac32 in _dl_sysinfo_int80 () from /lib/ld-linux.so.2
#1  0x0068698b in __waitpid_nocancel () from /lib/tls/libpthread.so.0
#2  0x055727f4 in libgnomeui_module_info_get () from
/usr/lib/libgnomeui-2.so.0
#3  <signal handler called>
#4  0x00bd0fe3 in gdk_window_set_cursor (window=0x9378410, cursor=0x0)
    at gdkwindow-x11.c:2389
#5  0x05605408 in nautilus_icon_canvas_item_event (item=0x9804b78,
    event=0xbfe45c70) at nautilus-icon-canvas-item.c:1602
#6  0x05a64112 in eel_marshal_BOOLEAN__BOXED () from
/usr/lib/libeel-2.so.2
#7  0x00aa6007 in g_cclosure_new_swap () from /usr/lib/libgobject-2.0.so.0
#8  0x00aa5cb0 in g_closure_invoke () from /usr/lib/libgobject-2.0.so.0
#9  0x00ab767c in g_signal_emit_by_name () from
/usr/lib/libgobject-2.0.so.0
#10 0x00ab6a0d in g_signal_emit_valist () from
/usr/lib/libgobject-2.0.so.0

I'll still have the core around for a few days I expect.