BUG #5437: Production db down

The following bug has been logged online:

Bug reference: 5437
Logged by: shanmugavel
Email address: shanmugavel_m(at)onwardgroup(dot)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