sudo /etc/init.d/postgresql-7.4 stop
sudo /etc/init.d/postgresql-8.0 stop
sudo /etc/init.d/postgresql-8.1 stop
-sudo killall pg_autovacuum postmaster
+sudo /etc/init.d/postgresql-8.2 stop
+sudo killall pg_autovacuum postmaster postgres
sudo rm -rf /etc/postgresql /var/lib/postgresql/ /var/log/postgresql/ /tmp/postgresql-testsuite/ /var/run/postgresql/*