postgres: stats collector process

Hello

I want to see statistics about the use of my postgresql 8.3 in Ubuntu 8.04.1 (Hardy) Server. The package installed is http://packages.ubuntu.com/hardy/postgresql

The statistic in this version of postgres are by default enabled, but I didn't see that the process "postgres: stats collector process" as say in http://www.postgresql.org/docs/8.3/s...toring-ps.html is running in my server.

Thanks in advanced.