"Cannot write to log file: Unable to open log file"

"Cannot write to log file: Unable to open log file"
NOTES01 is logging this message to it's console.  It has not logged 
anything to log.nsf since the last reboot of Domino.
rather points to this
http://www-1.ibm.com/support/docview.wss?uid=swg21164403

A little drastic but perhaps I should try?

I am hoping that a backup issue has not left that file locked and a reboot 
of all of i5/os is in order.
...
Server NOTES01 is ending controlled.
...
19:14  SAV DEV('/QSYS.LIB/TAP02.DEVD') OBJ(('/NOTES01/*')) OUTPUT(*PRINT) 
EXPDATE('01/15/07') ENDOPT(*LEAVE)
21:07  CPF5386-End of media on device TAP02.
21:07  CPF3794-Save or restore operation ended unsuccessfully.
...
21:07  CPC1221-Job 820768/QNOTES/QNNINSTS submitted to job queue NOTES01 
in library QUSRNOTES.
21:07  LNT0925-Starting Domino server NOTES01 in subsystem NOTES01.


According to iNav only the SERVER job from QNOTES has a lock on it.  And 
it also claims the change time is quite current.

Rob Berendt