DYNPINFO ReadODSECLUpdateInf cause mail server crash

ND6.01CF1 on iSeries V5R2 - seeing mail server(not other ND serves on same LPAR) - crashing.

They ran ok with limited user activity over weekend - but crashed friday and monday with increased user activity.

Below is from NSD file.

Any troubleshooting suggestions would be appreciated.

thanks,

Berkley

From module . . . . . . . . : DYNPINFO

From procedure . . . . . . : ReadODSECLUpdateInfo

Statement . . . . . . . . . : 6

To module . . . . . . . . . : DYNPINFO

To procedure . . . . . . . : ReadODSECLUpdateInfo

Statement . . . . . . . . . : 6

Thread . . . . : 00000062

Message . . . . : Pointer not set for location referenced.

Cause . . . . . : A pointer was used, either directly or as a basing

pointer, that has not been set to an address.