Question about an Entry in my access.log

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ThreadAuthorDate (-000)
M++\Miles Beck2005-02-17 22:28
||M|Austin Godber2005-02-17 22:31
|||MAustin Godber2005-02-17 22:33
||MMiles Beck2005-02-17 22:36
M|Austin Godber2005-02-17 22:37
|MJD Austin2005-02-17 22:38
MMiles Beck2005-02-17 23:19