Ubuntu Dapper (live online update of Breezy)
Gnome 2.14.1

Have installed nautilus-dbg? where do I go from here.. tried to start nautilus-dbg from the command line but not there.. ug buddy is also installed but see no errors..(relative newbie to Linux on desktop)

Can u point me in the right direction ? 

Backtrace was generated from '/usr/bin/nautilus'

Using host libthread_db library "/lib/tls/i686/cmov/libthread_db.so.1".
[Thread debugging using libthread_db enabled]
[New Thread -1225439552 (LWP 4887)]
[New Thread -1227236432 (LWP 4890)]
0xffffe410 in __kernel_vsyscall ()
#0  0xffffe410 in __kernel_vsyscall ()
#1  0xb75228c4 in poll () from /lib/tls/i686/cmov/libc.so.6
#2  0xb76cf7d8 in g_main_context_check () from /usr/lib/libglib-2.0.so.0
#3  0xb76cfca8 in g_main_loop_run () from /usr/lib/libglib-2.0.so.0
#4  0xb7bd36d5 in IA__gtk_main () at gtkmain.c:1026
#5  0x08079e26 in main (argc=125, argv=0xbfa98a04) at nautilus-main.c:406
#6  0xb7477ea2 in __libc_start_main () from /lib/tls/i686/cmov/libc.so.6
#7  0x080672a1 in _start () at ../sysdeps/i386/elf/start.S:119

Thread 2 (Thread -1227236432 (LWP 4890)):
#0  0xffffe410 in __kernel_vsyscall ()
No symbol table info available.
#1  0xb75228c4 in poll () from /lib/tls/i686/cmov/libc.so.6
No symbol table info available.
#2  0xb76cf7d8 in g_main_context_check () from /usr/lib/libglib-2.0.so.0
No symbol table info available.
#3  0xb76cfca8 in g_main_loop_run () from /usr/lib/libglib-2.0.so.0
No symbol table info available.
#4  0xb77b170e in link_thread_io_context () from /usr/lib/libORBit-2.so.0
No symbol table info available.
#5  0xb76e85d2 in g_static_private_free () from /usr/lib/libglib-2.0.so.0
No symbol table info available.
#6  0xb7732341 in start_thread () from /lib/tls/i686/cmov/libpthread.so.0
No symbol table info available.
#7  0xb752c4ee in clone () from /lib/tls/i686/cmov/libc.so.6
No symbol table info available.

Thread 1 (Thread -1225439552 (LWP 4887)):
#0  0xffffe410 in __kernel_vsyscall ()
No symbol table info available.
#1  0xb75228c4 in poll () from /lib/tls/i686/cmov/libc.so.6
No symbol table info available.
#2  0xb76cf7d8 in g_main_context_check () from /usr/lib/libglib-2.0.so.0
No symbol table info available.
#3  0xb76cfca8 in g_main_loop_run () from /usr/lib/libglib-2.0.so.0
No symbol table info available.
#4  0xb7bd36d5 in IA__gtk_main () at gtkmain.c:1026
	tmp_list = (GList *) 0x81644e8
	functions = (GList *) 0x0
	init = (GtkInitFunction *) 0x81c7150
	loop = (GMainLoop *) 0x822dc88
#5  0x08079e26 in main (argc=125, argv=0xbfa98a04) at nautilus-main.c:406
	kill_shell = 0
	restart_shell = 0
	no_default_window = 1
	browser_window = 0
	no_desktop = 0
	startup_id = <value optimized out>
	startup_id_copy = 0x81621c8 "h\033\026\bèÛt·h\033\026\bçÝt·h\033\026\b-ùt· "
	geometry = 0x0
	perform_self_check = 0
	popt_context = (poptContext) 0x81644e8
	args = (const char **) 0x0
	application = (NautilusApplication *) 0x81c7150
	program = (GnomeProgram *) 0x815dc28
	context_as_value = {g_type = 68, data = {{v_int = 135677160, 
      v_uint = 135677160, v_long = 135677160, v_ulong = 135677160, 
      v_int64 = 135677160, v_uint64 = 135677160, v_float = 4.5219982e-34, 
      v_double = 6.7033423681306142e-316, v_pointer = 0x81644e8}, {v_int = 0, 
      v_uint = 0, v_long = 0, v_ulong = 0, v_int64 = 0, v_uint64 = 0, 
      v_float = 0, v_double = 0, v_pointer = 0x0}}}
	options = {{longName = 0x812f604 "check", shortName = 99 'c', 
    argInfo = 0, arg = 0xbfa98950, val = 0, 
    descrip = 0x812f630 "Perform a quick set of self-check tests.", 
    argDescrip = 0x0}, {longName = 0x8132597 "geometry", shortName = 103 'g', 
    argInfo = 1, arg = 0xbfa98954, val = 0, 
    descrip = 0x812f65c "Create the initial window with the given geometry.", 
    argDescrip = 0x812f4b7 "GEOMETRY"}, {
    longName = 0x812bb2d "no-default-window", shortName = 110 'n', 
    argInfo = 0, arg = 0xbfa98960, val = 0, 
    descrip = 0x812f690 "Only create windows for explicitly specified URIs.", 
    argDescrip = 0x0}, {longName = 0x812f4c0 "no-desktop", shortName = 0 '\0', 
    argInfo = 0, arg = 0xbfa98958, val = 0, 
    descrip = 0x812f6c4 "Do not manage the desktop (ignore the preference set in the preferences dialog).", argDescrip = 0x0}, {
    longName = 0x813110c "browser", shortName = 0 '\0', argInfo = 0, 
    arg = 0xbfa9895c, val = 0, descrip = 0x812f4cb "open a browser window.", 
    argDescrip = 0x0}, {longName = 0x812f60c "quit", shortName = 113 'q', 
    argInfo = 0, arg = 0xbfa98968, val = 0, 
    descrip = 0x812f4e2 "Quit Nautilus.", argDescrip = 0x0}, {
    longName = 0x812f613 "restart", shortName = 0 '\0', argInfo = 1073741824, 
    arg = 0xbfa98964, val = 0, descrip = 0x812f4f1 "Restart Nautilus.", 
    argDescrip = 0x0}, {longName = 0x0, shortName = 0 '\0', argInfo = 0, 
    arg = 0x0, val = 0, descrip = 0x0, argDescrip = 0x0}}
#6  0xb7477ea2 in __libc_start_main () from /lib/tls/i686/cmov/libc.so.6
No symbol table info available.
#7  0x080672a1 in _start () at ../sysdeps/i386/elf/start.S:119
No locals.
#0  0xffffe410 in __kernel_vsyscall ()