Description of problem:

I get this segfault when running rhythmbox:

Program received signal SIGSEGV, Segmentation fault.
[Switching to Thread 0xb7fc5720 (LWP 3129)]
0x02514c61 in malloc_consolidate (av=0x2603120) at malloc.c:4834
4834	            unlink(p, bck, fwd);
(gdb) bt
#0  0x02514c61 in malloc_consolidate (av=0x2603120) at malloc.c:4834
#1  0x02516d8d in _int_malloc (av=0x2603120, bytes=1048) at malloc.c:4166
#2  0x02518b7b in __libc_malloc (bytes=1048) at malloc.c:3553
#3  0x00feea56 in IA__g_malloc (n_bytes=1048) at gmem.c:131
#4  0x0100366b in IA__g_slice_alloc (mem_size=1048) at gslice.c:824
#5  0x00bdf519 in pango_script_iter_new (text=0x92ac2d8 "Adam Richman (1)", 
    length=16) at pango-script.c:130
#6  0x00bcdb8f in itemize_state_init (state=0xbfe84be0, 
    context=<value optimized out>, text=<value optimized out>, 
    base_dir=PANGO_DIRECTION_LTR, start_index=0, length=16, attrs=0xb5db2900, 
    cached_iter=0xb5ddf4c0, desc=0x0) at pango-context.c:852
#7  0x00bcea2b in pango_itemize_with_base_dir (context=0x903d950, 
    base_dir=PANGO_DIRECTION_LTR, text=0x92ac2d8 "Adam Richman (1)", 
    start_index=0, length=16, attrs=0xb5db2900, cached_iter=0xb5ddf4c0)
    at pango-context.c:1423
#8  0x00bd7c04 in pango_layout_check_lines (layout=0x92d3db0)
    at pango-layout.c:3618
#9  0x00bd8da7 in pango_layout_get_extents_internal (layout=0x92d3db0, 
    ink_rect=0x0, logical_rect=0xbfe84f3c, line_extents=0x0)
    at pango-layout.c:2311
#10 0x00722cce in get_size (cell=0x8ca6398, widget=0x8c38d08, cell_area=0x0, 
    layout=0x92d3db0, x_offset=0x0, y_offset=0x0, width=0xbfe8503c, 
    height=0xbfe85040) at gtkcellrenderertext.c:1540
---Type <return> to continue, or q <return> to quit---
#11 0x00722fb5 in gtk_cell_renderer_text_get_size (cell=0x8ca6398, 
    widget=0x8c38d08, cell_area=0x0, x_offset=0x0, y_offset=0x0, 
    width=0xbfe8503c, height=0xbfe85040) at gtkcellrenderertext.c:1606
#12 0x00719d93 in IA__gtk_cell_renderer_get_size (cell=0x8ca6398, 
    widget=0x8c38d08, cell_area=0x0, x_offset=0x0, y_offset=0x0, 
    width=0xbfe8503c, height=0xbfe85040) at gtkcellrenderer.c:508
#13 0x0099d85e in IA__gtk_tree_view_column_cell_get_size (
    tree_column=0x8caceb0, cell_area=0x0, x_offset=0x0, y_offset=0x0, 
    width=0xbfe850f4, height=0xbfe850f0) at gtktreeviewcolumn.c:2606
#14 0x00980817 in validate_row (tree_view=0x8c38d08, tree=0x8ccaae8, 
    node=0x92bc480, iter=0xbfe85280, path=0x92f57d8) at gtktreeview.c:5609
#15 0x009817bb in validate_visible_area (tree_view=0x8c38d08)
    at gtktreeview.c:5924
#16 0x00982761 in do_presize_handler (tree_view=0x8c38d08)
    at gtktreeview.c:6237
#17 0x009828ce in presize_handler_callback (data=0x8c38d08)
    at gtktreeview.c:6259
#18 0x00ae88ff in gdk_threads_dispatch (data=0x92c9270) at gdk.c:470
#19 0x00fe5541 in g_idle_dispatch (source=0x903d068, callback=0, 
    user_data=0x92c9270) at gmain.c:4132
#20 0x00fe710c in IA__g_main_context_dispatch (context=0x8a975f8)
    at gmain.c:2061
#21 0x00fea54f in g_main_context_iterate (context=0x8a975f8, block=1, 
---Type <return> to continue, or q <return> to quit---
    dispatch=1, self=0x89cc410) at gmain.c:2694
#22 0x00fea8f9 in IA__g_main_loop_run (loop=0x923cb38) at gmain.c:2898
#23 0x008283ca in IA__gtk_main () at gtkmain.c:1163
#24 0x0805f7ed in main (argc=Cannot access memory at address 0x1
) at main.c:340

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