It will be necessary for us to reboot the core router between 5:30-6:00am on 08/27/2009.  This will cause the total network to be down during the time it takes the Core Router to reboot.  I estimate about 15 minutes.  This outage may also cause some servers to require a reboot to come back online.  Consequently various services may not be available due to this reboot of the core router.  We expect everything to be back to normal by 6:30am the very latest.  Thank you for your patience and understanding.