PANIC: read of clog file 3165, offset 0 failed: Success

Please assist, I am getting the following error when trying to vacuum analyze the database(database name db0532). It's PostgreSQL_7.3.4 running on CentOS5

db0532=# vacuum analyze;
PANIC: read of clog file 3165, offset 0 failed: Success
server closed the connection unexpectedly
This probably means the server terminated abnormally
before or while processing the request.
The connection to the server was lost. Attempting reset: Failed.

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