To Reproduce:

1) Start gnome panel, gnome-panel-2.
2) Start Nautilus, nautilus.

Actual Result:
Nautilus starts, panel crashes with error message, Segmentation fault.


Stack Trace below:

% pstack 1511
1511:   gnome-panel-2 --sm-client-id default3
-----------------  lwp# 1 / thread# 1  --------------------
 fdd9c2c8 waitid   (0, 5f8, ffbeebe0, 3)
 fdd563a8 _waitpid (0, ffbeece8, 0, ffbeece8, 0, 0) + 60
 fdf5aab0 waitpid  (b, ffbef140, ffbeee88, 0, 0, 0) + 34
 fdf5b7dc __sighndlr (b, ffbef140, ffbeee88, ff18b328, 14b914, 14b904) + c
 fdf584c0 sigacthandler (b, 14b870, 0, 0, 0, fdf6e000) + 708
 --- called from signal handler with signal 11 (SIGSEGV) ---
 fe72d5a0 convert_real_slow (218910, 232a60, 30, 1a0, 28, 1af) + d8
 fe72df1c rgbconvert (1af, 14c628, 30, 0, 1a0, 28) + 54c
 fe72f060 gdk_pixbuf_get_from_image (f, d, 14c628, 1a0, 28, 0) + 728
 fe72e8cc gdk_pixbuf_get_from_drawable (28, 0, 14c628, 0, 0, 0) + 8ec
 ff2617e4 _wnck_gdk_pixbuf_get_from_pixmap (0, f, 0, 0, 0, 0) + ec
 ff261920 try_pixmap_and_mask (2800003, 2800006, ffbef604, 20, 20,
ffbef600) + b0
 ff262b04 _wnck_read_icons (10, ffbef588, ffbef578, ffbef574, 20, ffbef600)
+ 5e4
 ff258d38 get_icons (10, 231004, 22d104, 0, 6e617574, 756e7469) + 78
 ff25ae98 force_update_now (230fb8, ffbef66c, 22d104, 22d108, 22d10c, 30) +
218
 ff256584 _wnck_window_create (2800030, 182d60, 230bb0, 6, 0, 0) + 354
 ff24e97c update_client_list (182d60, 0, 0, 0, 0, 0) + 2a4
 ff24fca4 do_update_now (182d60, 63e5a, 95d87c, 0, 0, ffbef868) + 74
 ff24fd34 update_idle (182d60, 0, 0, fde62598, 0, 0) + 44
 fde635bc g_idle_dispatch (1ab4b0, ff24fcf0, 182d60, fde5dd3c, 0, 0) + 84
 fde5dd68 g_main_dispatch (168f50, 0, 0, fde5faec, 0, 0) + 268
 fde5fc08 g_main_context_dispatch (168f50, c8, 21cc40, 8, 8, 0) + c8
 fde60360 g_main_context_iterate (168f50, 1, 1, 14c128, ff3e2660, 42121) +
6b0
 fde61350 g_main_loop_run (215b88, 215b88, 40a, 0, 0, 1) + 5a8
 fe99cf88 gtk_main (21, 64258, 0, 0, 0, 0) + 1c0
 00064c90 main     (10d144, 13d0c8, 13d0d8, 13d0e8, 13d0fc, 13d108) + 2c8
 00055b30 _start   (0, 0, 0, 0, 0, 0) + 108
-----------------  lwp# 2 / thread# 2  --------------------
 fdd9b684 signotifywait ()
 fdf4ed4c _dynamiclwps (fdf6e000, 59, 0, 0, ffbef58c, 4) + 1c
 fdf52028 thr_yield (0, 0, 0, 0, 0, 0) + 8c
-----------------  lwp# 3  --------------------------------
 fdd99228 door     (0, 0, 0, 0, fdc75d10, 4)
 fdf56b9c _sc_door_func (0, 0, 0, 0, 0, 0) + 54
-----------------  lwp# 4  --------------------------------
 fdd9bce8 lwp_cond_wait (fdf75550, fdf75560, fdf6edb8)
 fdf49098 _age     (4, fdf6eda4, fdf6e000, 3, fdf6e000, 1) + 74
 fdf4a72c _lwp_start (fdc63d70, 0, 4000, fdc0fc2c, 0, 0) + 18
 fdf52028 thr_yield (0, 0, 0, 0, 0, 0) + 8c
--------------------------  thread# 3  --------------------
 fdf4ddb4 _reap_wait (fdf729e8, 20528, 0, fdf6e000, 0, 0) + 38
 fdf4db0c _reaper  (fdf6ee38, fdf74748, fdf729e8, fdf6ee10, 1, fe400000) +
38
 fdf5b6e0 _thread_start (0, 0, 0, 0, 0, 0) + 40