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 5.5.9.2 Password Hashing in MySQL 4.1.0
 .......................................
 
 Password hashing in MySQL 4.1.0 differs from hashing in 4.1.1 and up.
 The 4.1.0 differences are:
 
    * Password hashes are 45 bytes long rather than 41 bytes.
 
    * The `PASSWORD()' function is non-repeatable.  That is, with a given
      argument X, successive calls to `PASSWORD(X)' generate different
      results.
 
 
 These differences make authentication in 4.1.0 incompatible with that of
 releases that follow it.  If you have upgraded to MySQL 4.1.0, it is
 recommended that you upgrade to a newer version as soon as possible.
 After you do, reassign any long passwords in the `user' table so that
 they are compatible with the 41-byte format.
 

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