Comment 16 for bug 411533

Okay, installed the latest from the repository:

$ apt-cache policy libc6-dbgsym
libc6-dbgsym:
  Installed: 2.10.1-0ubuntu8
  Candidate: 2.10.1-0ubuntu8
  Version table:
 *** 2.10.1-0ubuntu8 0
        500 http://ddebs.ubuntu.com karmic/main Packages
        500 http://ddebs.ubuntu.com karmic/main Packages
        100 /var/lib/dpkg/status

$ pidof system-tools-backends
3991

$ sudo gdb attach 3991
[sudo] password for marc:
GNU gdb (GDB) 6.8.50.20090628-cvs-debian
Copyright (C) 2009 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law. Type "show copying"
and "show warranty" for details.
This GDB was configured as "i486-linux-gnu".
For bug reporting instructions, please see:
<http://www.gnu.org/software/gdb/bugs/>...
attach: No such file or directory.
Attaching to process 3991
Reading symbols from /usr/sbin/system-tools-backends...(no debugging symbols found)...done.
Reading symbols from /usr/lib/libdbus-glib-1.so.2...(no debugging symbols found)...done.
Loaded symbols for /usr/lib/libdbus-glib-1.so.2
Reading symbols from /lib/libdbus-1.so.3...(no debugging symbols found)...done.
Loaded symbols for /lib/libdbus-1.so.3
Reading symbols from /lib/tls/i686/cmov/libpthread.so.0...(no debugging symbols found)...done.
[Thread debugging using libthread_db enabled]
Loaded symbols for /lib/tls/i686/cmov/libpthread.so.0
Reading symbols from /lib/tls/i686/cmov/librt.so.1...(no debugging symbols found)...done.
Loaded symbols for /lib/tls/i686/cmov/librt.so.1
Reading symbols from /usr/lib/libpolkit-gobject-1.so.0...(no debugging symbols found)...done.
Loaded symbols for /usr/lib/libpolkit-gobject-1.so.0
Reading symbols from /usr/lib/libgio-2.0.so.0...(no debugging symbols found)...done.
Loaded symbols for /usr/lib/libgio-2.0.so.0
Reading symbols from /usr/lib/libgobject-2.0.so.0...(no debugging symbols found)...done.
Loaded symbols for /usr/lib/libgobject-2.0.so.0
Reading symbols from /usr/lib/libgmodule-2.0.so.0...(no debugging symbols found)...done.
Loaded symbols for /usr/lib/libgmodule-2.0.so.0
Reading symbols from /usr/lib/libglib-2.0.so.0...(no debugging symbols found)...done.
Loaded symbols for /usr/lib/libglib-2.0.so.0
Reading symbols from /lib/tls/i686/cmov/libc.so.6...(no debugging symbols found)...done.
Loaded symbols for /lib/tls/i686/cmov/libc.so.6
Reading symbols from /lib/ld-linux.so.2...Reading symbols from /usr/lib/debug/lib/ld-2.10.1.so...done.
done.
Loaded symbols for /lib/ld-linux.so.2
Reading symbols from /usr/lib/libeggdbus-1.so.0...done.
Loaded symbols for /usr/lib/libeggdbus-1.so.0
Reading symbols from /lib/tls/i686/cmov/libdl.so.2...done.
Loaded symbols for /lib/tls/i686/cmov/libdl.so.2
Reading symbols from /lib/libpcre.so.3...done.
Loaded symbols for /lib/libpcre.so.3
Reading symbols from /lib/tls/i686/cmov/libresolv.so.2...done.
Loaded symbols for /lib/tls/i686/cmov/libresolv.so.2
Reading symbols from /lib/libselinux.so.1...done.
Loaded symbols for /lib/libselinux.so.1
0x009da422 in __kernel_vsyscall ()
(gdb) thread apply all bt

Thread 1 (Thread 0xb8069720 (LWP 3991)):
#0 0x009da422 in __kernel_vsyscall ()
#1 0x006ddb9b in poll () from /lib/tls/i686/cmov/libc.so.6
#2 0x0017938b in g_poll () from /usr/lib/libglib-2.0.so.0
#3 0x0016c45b in ?? () from /usr/lib/libglib-2.0.so.0
#4 0x0016ca8f in g_main_loop_run () from /usr/lib/libglib-2.0.so.0
#5 0x0804bf8e in ?? ()
#6 0x00635b56 in __libc_start_main () from /lib/tls/i686/cmov/libc.so.6
#7 0x0804a3a1 in ?? ()