storeWriteCleanLog: Not currently OK to rewrite swap log

Hello.

Problem:

squid -k interrupt.

squid write swap log and exiting normaly.

When rebuilding storage in FAST MODE (new start):

...
1998/04/14 16:10:01| 438272 Lines read so far.
1998/04/14 16:10:02| 442368 Lines read so far.
1998/04/14 16:10:03| 446464 Lines read so far.
FATAL: Received Segment Violation...dying.
1998/04/14 16:10:03| storeWriteCleanLog: Not currently OK to rewrite swap log.
1998/04/14 16:10:03| storeWriteCleanLog: Operation aborted.
CPU Usage: user 67 sys 13
Maximum Resident Size: 69888 KB
Page faults with physical i/o: 10
...

:(

Then squid restarting and rebuild storage in normal (slow) mode,
and then restarting by FATAL once more :(

No reason, no coredumps, no nothing :( Why!?

-- 
Igor Vinokurov