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]> .

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DP/VS