Contrib source

So, I needed to build a special PG, for use with xTuple (an ERP).  I got the 8.4.4 source, dumped it in a directory in
myhome, and put the executable out on a non-standard directory on one of my SSD. 

Reading Greg Smith's "High Performance..." book, suggested that I needed the postgresql-contrib thingees.  Synaptic
(ubuntu10.04) had it listed, so I went ahead.  I didn't notice that it would do an install of all 8.4!!! 

From that point forward, I would get a terminal error message about not being able to start PG whenever Synaptic did an
update(no "server.key").  I've uninstalled all of PG, and need to do it again, but I'll need the contrib source, and I
don'tfind it anywhere.  I must not be looking in the right place. 

Where might that be?

thanks,
robert