Postgres crashing intermittentaly

 Hi,

I am running 7.4.1-3 on Windows2000 sp4.  I have backups that run every
hour  and sometimes postgresql is crashing after executing pg_dump.  I
have postgresql.conf set to record errors and this is what has been
captured.

Event Type: Information
Event Source: postgres
Event Category: None
Event ID: 0
Date:  3/30/2004
Time:  3:11:00 PM
Description:
The description for Event ID ( 0 ) in Source ( postgres ) cannot be
found. The local computer may not have the necessary registry
information or message DLL files to display messages from a remote
computer. The following information is part of the event: postgres : PID
928 : [10-1] LOG:  server process (PID 3108) was terminated by signal
11.

Event Type: Information
Event Source: postgres
Event Category: None
Event ID: 0
Date:  3/30/2004
Time:  3:11:00 PM
Description:
The description for Event ID ( 0 ) in Source ( postgres ) cannot be
found. The local computer may not have the necessary registry
information or message DLL files to display messages from a remote
computer. The following information is part of the event: postgres : PID
928 : [11-1] LOG:  terminating any other active server processes.

Event Type: Information
Event Source: postgres
Event Category: None
Event ID: 0
Date:  3/30/2004
Time:  3:11:00 PM
Description:
The description for Event ID ( 0 ) in Source ( postgres ) cannot be
found. The local computer may not have the necessary registry
information or message DLL files to display messages from a remote
computer. The following information is part of the event: postgres : PID
2888 : [10-1] WARNING:  terminating connection because of crash of
another server process.

Event Type: Information
Event Source: postgres
Event Category: None
Event ID: 0
Date:  3/30/2004
Time:  3:11:00 PM
Description:
The description for Event ID ( 0 ) in Source ( postgres ) cannot be
found. The local computer may not have the necessary registry
information or message DLL files to display messages from a remote
computer. The following information is part of the event: postgres : PID
2888 : [10-2] DETAIL:  The postmaster has commanded this server process
to roll back the current transaction and exit, because another server.

Event Type: Information
Event Source: postgres
Event Category: None
Event ID: 0
Date:  3/30/2004
Time:  3:11:00 PM
Description:
The description for Event ID ( 0 ) in Source ( postgres ) cannot be
found. The local computer may not have the necessary registry
information or message DLL files to display messages from a remote
computer. The following information is part of the event: postgres : PID
2888 : [10-3]  process exited abnormally and possibly corrupted shared
memory..

Event Type: Information
Event Source: postgres
Event Category: None
Event ID: 0
Date:  3/30/2004
Time:  3:11:01 PM
User:  USILWDRL55829\postgres
Computer: USILWDRL55829
Description:
The description for Event ID ( 0 ) in Source ( postgres ) cannot be
found. The local computer may not have the necessary registry
information or message DLL files to display messages from a remote
computer. The following information is part of the event: postgres : PID
928 : [12-1] LOG:  all server processes terminated; reinitializing.

Event Type: Information
Event Source: postgres
Event Category: None
Event ID: 0
Date:  3/30/2004
Time:  3:11:59 PM
Description:
The description for Event ID ( 0 ) in Source ( postgres ) cannot be
found. The local computer may not have the necessary registry
information or message DLL files to display messages from a remote
computer. The following information is part of the event: postgres : PID
2796 : [20-1] LOG:  unexpected pageaddr 0/B8FCC000 in log file 0,
segment 192, offset 16564224.

Event Type: Information
Event Source: postgres
Event Category: None
Event ID: 0
Date:  3/30/2004
Time:  3:26:50 PM
Description:
The description for Event ID ( 0 ) in Source ( postgres ) cannot be
found. The local computer may not have the necessary registry
information or message DLL files to display messages from a remote
computer. The following information is part of the event: postgres : PID
1632 : [1-1] LOG:  shmdt(0xaf0000) failed: Invalid argument.