SAST FATAL: could not access private key file "server.key"

When starting Postgres I get the following:


root@Admin:/home/it# /etc/init.d/postgresql-8.2 start
 * Starting PostgreSQL 8.2 database server
          * The PostgreSQL server failed to start. Please check the
log output:
2008-07-01 13:37:39 SAST FATAL:  could not access private key file
"server.key": Permission denied

What is the "server key"?

And how do I make it accessible?