NDBD restart errors,thanks for anybody's reply.

Here is error message:

Time: Monday 17 December 2007 - 14:06:36
Status: Temporary error, restart node
Message: Internal program error (failed ndbrequire)
(Internal error,
programming error or missing error message, please report a
bug)
Error: 2341
Error data: suma/Suma.cpp
Error object: SUMA (Line: 3168) 0x0000000a
Program: /usr/local/mysql/bin/ndbd
Pid: 3525
Trace: /usr/local/mysql/data/ndb_5_trace.log.6
Version: Version 5.1.21 (beta)
***EOM***

Any reply is welcome,thanks very much.