# grep den /var/log/audit/audit.log 
type=AVC msg=audit(1189100042.312:9): avc:  denied  { read write } for  pid=2355
comm="ssh-keygen" path="/dev/pts/0" dev=devpts ino=2
scontext=system_u:system_r:ssh_keygen_t:s0
tcontext=system_u:object_r:rhgb_devpts_t:s0 tclass=chr_file
type=AVC msg=audit(1189100043.427:10): avc:  denied  { read write } for 
pid=2359 comm="ssh-keygen" path="/dev/pts/0" dev=devpts ino=2
scontext=system_u:system_r:ssh_keygen_t:s0
tcontext=system_u:object_r:rhgb_devpts_t:s0 tclass=chr_file
type=AVC msg=audit(1189100044.552:11): avc:  denied  { read write } for 
pid=2363 comm="ssh-keygen" path="/dev/pts/0" dev=devpts ino=2
scontext=system_u:system_r:ssh_keygen_t:s0
tcontext=system_u:object_r:rhgb_devpts_t:s0 tclass=chr_file
type=AVC msg=audit(1189100055.391:12): avc:  denied  { unix_read unix_write }
for  pid=1495 comm="Xorg" key=0 scontext=system_u:system_r:xdm_xserver_t:s0
tcontext=system_u:system_r:firstboot_t:s0 tclass=shm
type=AVC msg=audit(1189100093.657:14): avc:  denied  { unix_read unix_write }
for  pid=1495 comm="Xorg" key=0 scontext=system_u:system_r:xdm_xserver_t:s0
tcontext=system_u:system_r:firstboot_t:s0 tclass=shm

This is on a fresh install of f8test2 rc1 (rawhide 20070906) a default install
and a run through firstboot including creating a user.

# audit2allow < /var/log/audit/audit.log 


#============= ssh_keygen_t ==============
allow ssh_keygen_t rhgb_devpts_t:chr_file { read write };

#============= xdm_xserver_t ==============
allow xdm_xserver_t firstboot_t:shm { unix_read unix_write };