Bug#449496: Bug - Nautilus crashes when I run file "properties"

[Alter Ego]

Package: nautilus
Version: 2.18.3-3

When I try to run file 'Properties' (right mouse button)
nautilus crashes and calls 'Bug report tool' (see below). 

I'm using up to date Debian testing.

-------------------------
BUG REPORTING TOOL output
------------------------- 

Distribution: Debian lenny/sid
Gnome Release: 2.18.3 2007-07-03 (Debian)
BugBuddy Version: 2.18.1

System: Linux 2.6.22-2-686 #1 SMP Fri Aug 31 00:24:01 UTC 2007 i686
X Vendor: The X.Org Foundation
X Vendor Release: 10300000
Selinux: No
Accessibility: Disabled
GTK+ Theme: Clearlooks
Icon Theme: gnome

Memory status: size: 71651328 vsize: 71651328 resident: 24145920 share:
15413248 rss: 24145920 rss_rlim: 4294967295
CPU usage: start_time: 1194319553 rtime: 1023 utime: 964 stime: 59 cutime:0
cstime: 0 timeout: 0 it_real_value: 0 frequency: 100

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

(no debugging symbols found)
Using host libthread_db library "/lib/i686/cmov/libthread_db.so.1".
(no debugging symbols found)
[Thread debugging using libthread_db enabled]
[New Thread 0xb6df06b0 (LWP 7692)]
(no debugging symbols found)
0xffffe410 in __kernel_vsyscall ()
#0  0xffffe410 in __kernel_vsyscall ()
#1  0xb764014b in waitpid () from /lib/i686/cmov/libpthread.so.0
#2  0xb7d24865 in ?? () from /usr/lib/libgnomeui-2.so.0
#3  0x00001f75 in ?? ()
#4  0xbfdc9098 in ?? ()
#5  0x00000000 in ?? ()

Thread 1 (Thread 0xb6df06b0 (LWP 7692)):
#0  0xffffe410 in __kernel_vsyscall ()
No symbol table info available.
#1  0xb764014b in waitpid () from /lib/i686/cmov/libpthread.so.0
No symbol table info available.
#2  0xb7d24865 in ?? () from /usr/lib/libgnomeui-2.so.0
No symbol table info available.
#3  0x00001f75 in ?? ()
No symbol table info available.
#4  0xbfdc9098 in ?? ()
No symbol table info available.
#5  0x00000000 in ?? ()
No symbol table info available.
#0  0xffffe410 in __kernel_vsyscall ()
The program is running.  Quit anyway (and detach it)? (y or n) [answered Y;
input not from terminal]

----------- .xsession-errors --------------------- 

file:///home/jjcale/temp/araucaria03.png
0x81821d8 2007/11/05 22:25:51.4285 (GLog): file
/tmp/buildd/gtk+2.0-2.12.1/gtk/gtkliststore.c: line 1677
(gtk_list_store_compare_func): assertion failed: (VALID_ITER (&iter_b,
list_store))
0x81821d8 2007/11/05 22:25:51.4287 (USER): debug log dumped due to signal 6