Steps to reproduce:
I was just hitting send-receive on a cleanly started evolution.


Stack trace:
Distribution: Fedora release 7 (Moonshine)
Gnome Release: 2.18.2 2007-05-28 (Red Hat, Inc)
BugBuddy Version: 2.18.0

System: Linux 2.6.21-1.3228.fc7 #1 SMP Tue Jun 12 14:56:37 EDT 2007 x86_64
X Vendor: The X.Org Foundation
X Vendor Release: 10300000
Selinux: Enforcing
Accessibility: Disabled
GTK+ Theme: Clearlooks
Icon Theme: Fedora

Memory status: size: 609476608 vsize: 609476608 resident: 50778112 share: 33505280 rss: 50778112 rss_rlim: 18446744073709551615
CPU usage: start_time: 1182063288 rtime: 147 utime: 134 stime: 13 cutime:1 cstime: 4 timeout: 0 it_real_value: 0 frequency: 100

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

[?1034hUsing host libthread_db library "/lib64/libthread_db.so.1".
[Thread debugging using libthread_db enabled]
[New Thread 46912496369248 (LWP 5808)]
[New Thread 1084229968 (LWP 5915)]
[New Thread 1094719824 (LWP 5912)]
[New Thread 1231087952 (LWP 5911)]
[New Thread 1105209680 (LWP 5835)]
0x000000347280d89f in __libc_waitpid (pid=5916, stat_loc=0x7fff746c653c, 
    options=0) at ../sysdeps/unix/sysv/linux/waitpid.c:41
41	  int result = INLINE_SYSCALL (wait4, 4, pid, stat_loc, options, NULL);

+ Trace 141591

----------- .xsession-errors (3866 sec old) ---------------------
You need to explicitly set elements to the NULL state before
dropping the final reference, to allow them to clean up.
(rhythmbox:3092): GStreamer-CRITICAL **: 
Trying to dispose element fakesink, but it is not in the NULL state.
You need to explicitly set elements to the NULL state before
dropping the final reference, to allow them to clean up.
(rhythmbox:3092): GStreamer-CRITICAL **: 
Trying to dispose element fakesink, but it is not in the NULL state.
You need to explicitly set elements to the NULL state before
dropping the final reference, to allow them to clean up.
--------------------------------------------------


Other information:
This may be related to Bug 448288 but the stack trace is different so I am keeping it separately.

All *-debuginfo packages installed.  evolution-2.10.2-2.fc7 on Fedora 7 x86_64.