ps not showing contexts?

[Wart <wart kobold org>]

After a month's worth of rawhide updates, I noticed that ps is no longer 
reporting the contexts for processes:

[root localhost audit]# selinuxenabled && echo $?
0
[root localhost audit]# rpm -q selinux-policy-targeted
selinux-policy-targeted-3.0.5-11.fc8
[root localhost ~]# ps auwxZ | tail
-                               gdm       2422  0.2  5.7  80604 29540 ? 
       Ss   21:58   0:03 /usr/libexec/gdmgreeter 
--gtk-module=gail:atk-bridge:/usr/lib/gtk-2.0/modules/libkeymouselistener
-                               gdm       2424  0.4  0.7  13272  3956 ? 
       S    21:58   0:05 /usr/libexec/at-spi-registryd
-                               gdm       2426  0.0  0.5  38748  2700 ? 
       Ssl  21:58   0:00 /usr/libexec/bonobo-activation-server 
--ac-activate --ior-output-fd=13

Any ideas what may have caused this to stop working?

--Wart