Potential History file corruption?

[Katsuhiro Kondou]

In article <20010716151449.Y28448 at newbabe.mengwong.com>,
	Roman Gollent <roman at pobox.com> wrote;

} 04/01.  We've encountered a problem where in the first hours
} of operation, grephistory returns the correct token for a
} given message id.  After a while however, grephistory ceases
} to work returning the first line of the history file:

I've never heard of this kind of problem.  And from your
analisys of the problem I still don't understand where
it happens.
-- 
Katsuhiro Kondou