LDAP network users/automount points doesn't work after power failure

Hi,

I have a lab of about a dozen Mac Mini clients that boot to their own local HDs and pull their user accounts from a MacPro tower running Mac OS X Server 10.4.9.

Last week there was a power outage. The power was restored a couple hours later, but the clients would not mount any of the automount points from the server and could not log into the network user accounts. The login window showed "No Network Accounts Available".

I went into Directory Access on each client, turned off LDAP and the line item for the open directory server, restarted the clients, then turned the LDAP on and enabled the open directory listing inside Directory Access. As soon as I turned LDAP back on, the mount points showed up, I logged out of the local user account and was able to log into the network user accounts.

It appeared to be fixed, but now the clients apparently lose their directory binding again after the client is restarted. I go back and toggle LDAP off, restart, toggle it back on and it all works again.

Any ideas on how I can get the setting to "stick" again? And why would the power outage cause this across the board for all the clients? Seems strange to me...