error on apt-get upgrade, please help

[eric lin <fsshl@centurytel.net>]

Dear Debian apt-get users:

  I have error

(Reading database ... 133340 files and directories currently installed.)
Preparing to replace postgresql-client 7.3rel-7 (using 
.../postgresql-client_7.3rel-9_i386.deb) ...

dpkg: error processing 
/var/cache/apt/archives/postgresql-client_7.3rel-9_i386.deb (--unpack):
 subprocess pre-installation script returned error exit status 1
Preparing to replace postgresql 7.3rel-7 (using 
.../postgresql_7.3rel-9_i386.deb) ...
No /usr/lib/postgresql/bin/postmaster found running; none killed.
Stopping PostgreSQL database: postmaster
pg_ctl: cannot find /var/lib/postgres/data/postmaster.pid
Is postmaster running?
.

dpkg: error processing 
/var/cache/apt/archives/postgresql_7.3rel-9_i386.deb (--unpack):
 subprocess pre-installation script returned error exit status 1
Nothing to do for abort-upgrade
Errors were encountered while processing:
 /var/cache/apt/archives/postgresql-client_7.3rel-9_i386.deb
 /var/cache/apt/archives/postgresql_7.3rel-9_i386.deb
E: Sub-process /usr/bin/dpkg returned an error code (1)

Please help

--
Sincere Eric
www.linuxspice.com
linux pc for sale