What were you doing when the application crashed?
I tried:

$ nautilus -q


Distribution: Fedora Core release 6 (Zod)
Gnome Release: 2.16.0 2006-09-04 (Red Hat, Inc)
BugBuddy Version: 2.16.0

System: Linux 2.6.18-1.2798.fc6 #1 SMP Mon Oct 16 14:37:32 EDT 2006 i686
X Vendor: The X.Org Foundation
X Vendor Release: 70101000
Selinux: Enforcing
Accessibility: Disabled
----------- .xsession-errors (1716 sec old) ---------------------
compiz: Couldn't bind redirected window 0x121409f to texture
compiz: pixmap 0xe00614 can't be bound to texture
compiz: Couldn't bind redirected window 0x1213d08 to texture
compiz: pixmap 0xe0061a can't be bound to texture
compiz: Couldn't bind redirected window 0x121409f to texture
compiz: pixmap 0xe00614 can't be bound to texture
compiz: Couldn't bind redirected window 0x1213d08 to texture
compiz: pixmap 0xe0061a can't be bound to texture
compiz: Couldn't bind redirected window 0x121409f to texture
compiz: pixmap 0xe00614 can't be bound to texture
compiz: Couldn't bind redirected window 0x1213d08 to texture
compiz: pixmap 0xe0061a can't be bound to texture
compiz: Couldn't bind redirected window 0x121409f to texture
...Too much output, ignoring rest...
--------------------------------------------------

Memory status: size: 86294528 vsize: 0 resident: 86294528 share: 0 rss: 26345472 rss_rlim: 0
CPU usage: start_time: 1162582019 rtime: 0 utime: 1219 stime: 0 cutime:1091 cstime: 0 timeout: 128 it_real_value: 0 frequency: 170

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

(no debugging symbols found)
Using host libthread_db library "/lib/libthread_db.so.1".
(no debugging symbols found)
[Thread debugging using libthread_db enabled]
[New Thread -1208739072 (LWP 5740)]
(no debugging symbols found)
0x00ab6402 in __kernel_vsyscall ()

+ Trace 82507