NOTICE DATE: May 5, 2008 NOTICE TYPE: M-A050508-01 Outage - Retail/Wholesale SHORT DESCRIPTION: ERCOT Texas Market Link (TML) Market Participant Identity Management (MPIM) application experienced an outage. INTENDED AUDIENCE: ERCOT Market Participants DAY AFFECTED: May 4, 2008 from 8:15 PM to 8:50 PM LONG DESCRIPTION: Sunday, May 4, 2008 from 8:15 PM to 8:50 PM, ERCOT's Texas Market Link (TML) Market Participant Identity Management (MPIM) application experienced an outage. This was the result of a SAN issue causing the Lightweight Directory Access Protocol (LDAP) servers to be switched to read-only mode. CONTACT: If you have any questions, please contact your ERCOT Account Manager. You may also call the general ERCOT Client Services phone number at (512) 248-3900 or contact ERCOT Client Services via e-mail at [log in to unmask] <BLOCKED::mailto:[log in to unmask]> . If you are receiving e-mail from an ERCOT distribution list that you no longer wish to receive, please follow this link in order to unsubscribe from this list. http://lists.ercot.com <http://lists.ercot.com/> DP/VS