postgreslog - panic message

["surabhi.ahuja" <surabhi(dot)ahuja(at)iiitb(dot)ac(dot)in>]

hi,

i am getting the following error messages:

 

<2006-05-24 15:28:08 CDT%>LOG:  could not bind IPv4 socket: Address already in use
<2006-05-24 15:28:08 CDT%>HINT:  Is another postmaster already running on port 5432? If not, wait a few seconds and retry.
<2006-05-24 15:28:08 CDT%>WARNING:  could not create listen socket for "localhost"
<2006-05-24 15:28:08 CDT%>LOG:  database system was shut down at 2006-05-24 15:28:08 CDT

 

<2006-05-24 16:19:39 CDT%>PANIC:  could not locate a valid checkpoint record
<2006-05-24 16:19:39 CDT%>LOG:  startup process (PID 6548) was terminated by signal 6
<2006-05-24 16:19:39 CDT%>LOG:  aborting startup due to startup process failure
<2006-05-24 16:21:28 CDT%>LOG:  database system was shut down at 2006-05-24 16:01:00 CDT
<2006-05-24 16:21:28 CDT%>LOG:  record with zero length at 0/AC92BC
<2006-05-24 16:21:28 CDT%>LOG:  invalid primary checkpoint record
<2006-05-24 16:21:28 CDT%>LOG:  record with zero length at 0/AC9280
<2006-05-24 16:21:28 CDT%>LOG:  invalid secondary checkpoint record
<2006-05-24 16:21:28 CDT%>PANIC:  could not locate a valid checkpoint record
<2006-05-24 16:21:28 CDT%>LOG:  startup process (PID 8428) was terminated by signal 6

i am using postgres 8.0.0

 

please tell as to what might be going wrong.

thanks,

regards

Surabhi