I was providing packages of GIS related software for Ubuntu distributions, because of I was packaging the software for me anyways and I just let them on the server. Many people seemed to be using them, but it is truth, that with the time, I moved from desktop-gis world to web-gis. I had no time to test the software properly and many times it was simply not working. But still, the GRASS 6.4 rc4 for Ubuntu 9.04 was the most commented post on this blog.
I will stop now to compile custom packages, at least, until Ubuntu GIS will provide up-to-date packages, which are working. Many thanks to all Ubuntu-GIS people, they are doing a good job.
So, now, all who want to have up-to-date software, add
deb http://ppa.launchpad.net/ubuntugis/ubuntugis-unstable/ubuntu karmic main deb-src http://ppa.launchpad.net/ubuntugis/ubuntugis-unstable/ubuntu karmic main
/etc/apt/sources.list file (works for jaunty too).