What is postgresql status?

Hello all,
Don't shoot me, I'm just the fella sweeping up after a departure.
I'm supporting a web site with mapping features using Mapserver and PostgreSql 7.5 for windows.
Recently, my mapping features went down.
Error messages that display are the following...

Warning: pg_query(): Query failed: ERROR: xlog flush request 0/34D85078 is not satisfied --- flushed only to 0/34CD4518 CONTEXT: writing block 0 of relation 394198/412173 in C:\ms4w\Apache\htdocs\davison\mapping\gis1\viewparcel_nolink.php on line 10

Warning: pg_fetch_row(): supplied argument is not a valid PostgreSQL result resource in C:\ms4w\Apache\htdocs\davison\mapping\gis1\viewparcel_nolink.php on line 12

It looks to me that the query failed based on a hard drive issue. Well, over the weekend we swapped out the hard drive for new. The site comes back fine but I'm still receiving the error.

Another notice is when I shutdown and restart the database, I get this...

C:\ms4w\apps\pgsql75win>cd c:\

C:\>cd ms4w/apps/pgsql75win/data/

C:\ms4w\apps\pgsql75win\data>del postmaster.pid
Could Not Find C:\ms4w\apps\pgsql75win\data\postmaster.pid
LOG: database system was shut down at 2011-08-24 17:30:14 Eastern Standard Time

LOG: checkpoint record is at 0/34CD4078
LOG: redo record is at 0/34CD4078; undo record is at 0/0; shutdown TRUE
LOG: next transaction ID: 1198832; next OID: 1772830
LOG: database system is ready

I'm not sure if the database is up or not.
I don't even see postgresql or mapserver as Windows services.
I'm very confused.

Thank you for any help with this continuing problem.

John

John W. McLeod

Technology Integrator
Spicer Group, Inc.
230 S. Washington Avenue
Saginaw, MI 48607
Phone: (989) 921-5550
Fax: (989) 754-4440
mailto: johnm(at)spicergroup(dot)com<mailto:johnm(at)spicergroup(dot)com>

www.spicergroup.com<http://www.spicergroup.com/>

Stronger. Safer. Smarter. Spicer.