BUG #5437: Production db down

The following bug has been logged online:

Bug reference:      5437
Logged by:          shanmugavel
Email address:      shanmugavel_m@onwardgroup.com
PostgreSQL version: 8.3
Operating system:   linux RHEL 5
Description:        Production db down
Details:

Hi,

i'm shanmugavel I'm oracle dba now i handle the postgressql db. now i face
the problem

how can i resolve that the problem


LOG:  database system was shut down at 2007-05-14 19:47:51 BST
LOG:  invalid magic number 000 in log file 0, segment 0, offset 0
LOG:  invalid primary checkpoint record
LOG:  invalid magic number 000 in log file 0, segment 0, offset 0
LOG:  invalid secondary checkpoint record
PANIC:  could not locate a valid checkpoint record
LOG:  startup process (PID 9590) was terminated by signal 6: Aborted
LOG:  aborting startup due to startup process failure


Regards,

Shanmugavel M