[K12OSN] No sound after moving to FC10

[Phydeaux]

Hi!

I'm working with John Ellson who has posted here before.  The main problem we 
are having right now is that we have no sound.  Sound worked just fine but at
some point while we were running FC9 it became attenuated.  It coincided with
an update, but unfortunately, we did not notice which one. At that point, even
having everything turned up all the way it was difficult to hear anything.  In our
school environment it was impossible to hear anything from the speakers if
students were in the room.

Based on a number of suggestions on this list, we moved to FC10.  John posted a
list of the issues we encountered during the upgrade. The most important as far as
the teachers are concerned was the lack of sound.  With FC10 the clients get no
sound whatsoever.  There are a number of interesting messages in the system
logs that I hope will assist us in fixing this issue.

When users log in, we see a few things in /var/log/messages, often including these:
>Jan 27 15:02:00 sol xinetd[2347]: START: ldminfod pid=11592 from=::ffff:172.31.100.101
>Jan 27 15:02:00 sol xinetd[2347]: EXIT: ldminfod status=0 pid=11592 duration=0(sec)
This corresponds with a bug we filed here:
https://bugzilla.redhat.com/show_bug.cgi?id=480995

Additionally, we see this:
>Jan 27 15:02:08 sol gnome-session[11432]: WARNING: Application 'libcanberra-login-sound.desktop' failed to register before timeout

We filed this bug:
https://bugzilla.redhat.com/show_bug.cgi?id=480985
...it appears that this was also noticed and fixed upstream:
https://bugzilla.redhat.com/show_bug.cgi?id=478671

We also see this:
>Jan 27 15:02:08 sol pulseaudio[11611]: pid.c: Daemon already running.

...which matches some of the conditions listed in this bug:
https://bugzilla.redhat.com/show_bug.cgi?id=480205

Finally, we see lots of things like this when users log in:
>Jan 27 15:02:17 sol restorecond: Reset file context /home/username/.execoooGJLQgB: unconfined_u:object_r:user_home_dir_t:s0->system_u:object_r:user_home_t:s0
>Jan 27 15:02:17 sol restorecond: Reset file context /home/username/.execoooknH5JF: unconfined_u:object_r:user_home_dir_t:s0->system_u:o

and these:
>Jan 27 15:04:07 sol gnome-session[8677]: WARNING: Unable to determine session: Unable to lookup session information for process '8677'

Finally, when users log out there are always two processes left behind. 
>529      27789     1  0 10:27 ?        00:00:00 /usr/bin/pulseaudio --start
>529      27801 27789  0 10:27 ?        00:00:00 /usr/libexec/pulse/gconf-helper

Yum indicates no updates needed.  I am pretty sure everything is configured
properly.  Does anyone have any suggestions as to how to resolve any of these
issues?

Thanks!

reb