Hi All I have used PostgreSQL for SQL-Ledger in Linux (Ubuntu) for about 6months and have run into PostgreSQL problems when it starts up. PostgreSQL is reporting errors about changing user id so that it falls over when the system boots. I've read this: http://archives.postgresql.org/pgsql-admin/2006-01/msg00273.php I have found FAQ for Linux: http://www.designmagick.com/article/2/Starting-Out/Installing-PostgreSQL yet this error still occurs after changing the permissions of the postgresql directory ie: sudo chown -R postgres:postgres /usr/share/postgresql sudo chown -R postgres:postgres /usr/share/postgresql-common what happens: Manually starting postgresql by the user postgres: postgres@XXXX:/etc/init.d$ ./postgresql-7.4 start chmod: changing permissions of `/var/run/postgresql': Operation not permitted * Starting PostgreSQL 7.4 database server:main Error: Could not change user id [fail] after changing ownership of `/var/run/postgresql' to postgres:postgres and with permissions 4777 then the errors are less, but postgresql still doesn't start: postgres@XXX:/etc/init.d$ ./postgresql-7.4 start * Starting PostgreSQL 7.4 database server:main Error: Could not change user id [fail] I think this maybe something in /etc/postgresql/7.4/pg_hba.log or /etc/postgresql/7.4/postgresql.conf yet I haven't found the solution to get PostgreQL going. What could be wrong here? How can this be fixed? What do I need to read? TIA Russell