unknown entry in error log

[elsen at imecom.imec.be]

    Could someone tell me what the following error log entry (uerf) 
    means (VAX3900,running ultrix 3.1).

    This info could be very vital for me , so thanks for any help , 


                                               Marc (elsen at imec.be)


********************************* ENTRY   450. *********************************

----- EVENT INFORMATION -----

EVENT CLASS                             OPERATIONAL EVENT
OS EVENT TYPE                  250.     ASCII MSG
SEQUENCE NUMBER                408.
OPERATING SYSTEM                        ULTRIX 32
OCCURRED/LOGGED ON                      Fri Apr  5 16:00:09 1991 MET DST
OCCURRED ON SYSTEM                      imec
SYSTEM ID                 x0A000005     MICROCODE REV = 5.
SYSTYPE REG.              x01530301
                                        FIRMWARE REV = 83.
PROCESSOR TYPE                          KA655
MESSAGE                                              local gen 1424960588
                                         _nlink 0,

********************************* ENTRY   451. *********************************