DB/clog corruption

I've a db table generating the error below on pg_dump.  Per the
archives, i've tried creating a clog file 1559 but w/o success (
continue to get the same error) even when i extended the clog file to >
64K.  Are there other options to recovering this table?  Do i need to
extend clog 1559 to a greater size?  Do i have to 'do something' to
create a non-zero length record at 1/669E0568? ( if so, how?)

thanks,
reid

$ pg_dump -f table_dump.sql -t table_with_error dbname
FATAL 2:  read of clog file 1559, offset 0 failed: Success
pg_dump: FATAL 2:  read of clog file 1559, offset 0 failed: Success
pg_dump: lost synchronization with server, resetting connection
DEBUG:  server process (pid 1672) exited with exit code 2
DEBUG:  terminating any other active server processes
DEBUG:  all server processes terminated; reinitializing shared memory
and semaphores
DEBUG:  database system was interrupted at 2005-07-11 08:41:39 EDT
DEBUG:  checkpoint record is at 1/669E0528
DEBUG:  redo record is at 1/669E0528; undo record is at 0/0; shutdown
TRUE
DEBUG:  next transaction id: 1237894; next oid: 2850421
DEBUG:  database system was not properly shut down; automatic recovery
in progress
FATAL 1:  The database system is starting up
pg_dump: SQL command to dump the contents of table "table_with_error"
failed: PQendcopy() failed.
pg_dump: Error message from server: FATAL 1:  The database system is
starting up

pg_dump: The command was: COPY "table_with_error" TO stdout;
$ DEBUG:  ReadRecord: record with zero length at 1/669E0568
DEBUG:  redo is not required
DEBUG:  database system is ready