I'm not sure if it is installed on Phoenix, but the "Repo Speed Test" (aka apt-sources-update) script will download the latest sources.list and test all repositories in the list to help you find the fastest one (
all repositories in the list are identical.. usually the one closest to your geographic location is the one you want, but sometimes more distant ones can be faster; the script will test download speeds for each of them). Unlike some other linux distro's, you should only have
ONE software repository enabled in PCLinuxOS.
You can also get the latest sources.list file here:
http://distro.ibiblio.org/pub/linux/distributions/texstar/repo2010/sources.list(same place the script downloads it from):
General info on best practices for keeping your system up to date can be found here:
http://www.pclinuxos.com/wiki/index.php/Updating
