GNU gdb 6.4
Copyright 2005 Free Software Foundation, Inc.
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This GDB was configured as "i686-pc-linux-gnu".
Starting program: /usr/bin/xfdesktop 
(no debugging symbols found)
Using host libthread_db library "/lib/libthread_db.so.1".
(no debugging symbols found)
(no debugging symbols found)
(no debugging symbols found)
[Thread debugging using libthread_db enabled]
[New Thread -1224959472 (LWP 7313)]
[New Thread -1228117088 (LWP 7318)]
[Thread -1228117088 (LWP 7318) exited]

Program received signal SIGSEGV, Segmentation fault.
[Switching to Thread -1224959472 (LWP 7313)]
0xb71e137f in g_type_check_instance_cast () from /usr/lib/libgobject-2.0.so.0
#0  0xb71e137f in g_type_check_instance_cast () from /usr/lib/libgobject-2.0.so.0
#1  0x082fe1a0 in ?? ()
Kill the program being debugged? (y or n)