ECC errors are incorrectly reported on UltraSPARC[R] III platform servers
with kernel update patches below 108528-16. 

The minimum recommended Kernal Update is now 108528-16 on 
UltraSPARC[R] III platforms.                            

Apply kernel update patch 108528-16 and record whether
the errors still exist.  If you follow the recommendation for this platform,
the number and frequency of reported/logged ECC errors will diminish, if not
cease altogether.

Note: The number and effect of ECC errors could represent a
more significant problem or defective component. In order to
eliminate known issues with the manner UltraSPARC III platforms
have been reporting these errors, you must first apply the latest
kernel update patch before any accurate detection and assessment
can be made.
                 

Reference: Bug IDs: 4466085, 4718366