postgresql-8.4 error

[Mohammed Rashad <mohammedrashadkm@xxxxxxxxx>]

I am running ubuntu 10.04

I have problem installing postgresql-8.4

when i tried to start postgresql

/etc/init.d/postgresql-8.4 start

I am getting this error

 * Starting PostgreSQL 8.4 database server                                                                           * Error: could not exec /usr/lib/postgresql/8.4/bin/pg_ctl /usr/lib/postgresql/8.4/bin/pg_ctl start -D /var/lib/postgresql/8.4/main -l /var/log/postgresql/postgresql-8.4-main.log -s -o  -c config_file="/etc/postgresql/8.4/main/postgresql.conf" : 

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Rashad