This is result for command-line on my Terminal:
$ cat /etc/apt/sources.list
# Package repository URL's, working as of 01/06/2012
#===============================================
# Please enable only ONE (1) entry apart from the megagames repo!!!
#===============================================
rpm
http://ftp.vim.org/ibiblio/distributions/pclinuxos/megagames/apt/ pclinuxos/2010 megagames
# rpm
http://ftp.heanet.ie/pub/pclinuxos/apt/ pclinuxos/2010 main updates nonfree kde4 games xfce4
# rpm
http://ftp2.ie.freesbie.org/pub/pclinuxos/apt/ pclinuxos/2010 main updates nonfree kde4 games xfce4
# rpm
http://pclinuxos.c3sl.ufpr.br/pclinuxos/apt/ pclinuxos/2010 main updates nonfree kde4 games xfce4
# rpm
http://ftp.sh.cvut.cz/MIRRORS/pclinuxos/apt/ pclinuxos/2010 main updates nonfree kde4 games xfce4
# rpm
http://mirror.cpsc.ucalgary.ca/mirror/pclinuxos/pclinuxos/apt/ pclinuxos/2010 main updates nonfree kde4 games xfce4
# rpm
http://ftp.yz.yamagata-u.ac.jp/pub/linux/pclinuxos/apt/ pclinuxos/2010 main updates nonfree kde4 games xfce4
# rpm
http://ftp-srv2.kddilabs.jp/Linux/packages/pclinuxos/pclinuxos/apt/ pclinuxos/2010 main updates nonfree kde4 games xfce4
# rpm
http://ftp.jaist.ac.jp/pub/Linux/PCLinuxOS/apt/ pclinuxos/2010 main updates nonfree kde4 games xfce4
# rpm
http://kambing.ui.ac.id/pclinuxos/apt/ pclinuxos/2010 main updates nonfree kde4 games xfce4
# rpm
http://ftp.belnet.be/mirror/pclinuxonline.com/apt/ pclinuxos/2010 main updates nonfree kde4 games xfce4
# rpm
http://ftp.leg.uct.ac.za/pub/linux/pclinuxos/apt/ pclinuxos/2010 main updates nonfree kde4 games xfce4
# rpm
http://andrzejl.cyryl.net/ PCLinuxOS/REPO main updates nonfree kde4 games xfce4
# rpm
http://mirror.aarnet.edu.au/pub/pclinuxos/pclinuxos/apt/ pclinuxos/2010 main updates nonfree kde4 games xfce4
# rpm
http://mirror.internode.on.net/pub/pclinuxos/apt/ pclinuxos/2010 main updates nonfree kde4 games xfce4
# rpm
http://ftp.klid.dk/ftp/pclinuxos/apt/ pclinuxos/2010 main updates nonfree kde4 games xfce4
# rpm
http://mirrors.xservers.ro/pclinuxos/apt/ pclinuxos/2010 main updates nonfree kde4 games xfce4
# rpm
http://distrib-coffee.ipsl.jussieu.fr/pub/linux/pclinuxos/apt/ pclinuxos/2010 main updates nonfree kde4 games xfce4
# rpm
http://ftp.cc.uoc.gr/mirrors/linux/pclinuxos/apt/ pclinuxos/2010 main updates nonfree kde4 games xfce4
# rpm
http://pclosusers.com/pclosfiles/ pclinuxos/2010 main updates nonfree kde4 games xfce4
# rpm
http://ftp.nluug.nl/ibiblio/distributions/pclinuxos/pclinuxos/apt/ pclinuxos/2010 main updates nonfree kde4 games xfce4
# rpm
http://ftp.nl.freebsd.org/os/Linux/distr/pclinuxos/pclinuxos/apt/ pclinuxos/2010 main updates nonfree kde4 games xfce4
# rpm
http://ftp.vim.org/ibiblio/distributions/pclinuxos/pclinuxos/apt/ pclinuxos/2010 main updates nonfree kde4 games xfce4
# rpm
http://pclos.camors.org/apt/ pclinuxos/2010 main updates nonfree kde4 games xfce4
# rpm
http://pclinuxos.fi/pub/linux/apt/ 2010 main updates nonfree kde4 games xfce4
rpm
http://na.mirror.garr.it/mirrors/pclinuxos/apt/ pclinuxos/2010 main updates nonfree kde4 games xfce4
# rpm
http://distro.ibiblio.org/pclinuxos/pclinuxos/apt/ pclinuxos/2010 main updates nonfree kde4 games xfce4
# rpm
http://debian.ethz.ch/mirror/pclinuxos/apt/ pclinuxos/2010 main updates nonfree kde4 games xfce4
# rpm
http://ftp.ch.debian.org/mirror/pclinuxos/apt/ pclinuxos/2010 main updates nonfree kde4 games xfce4
# rpm
http://gnustep.ethz.ch/mirror/pclinuxos/apt/ pclinuxos/2010 main updates nonfree kde4 games xfce4
I am italian and I live in Italy, so I have the GARR (from Naples, Milan and Bologna) imposted as my default Repository.
$ apt-cache policy
Package Files:
100 RPM Database
500
http://na.mirror.garr.it pclinuxos/2010/xfce4 pkglist
release v=Unknown,o=Unknown,a=Unknown,l=Unknown,c=xfce4
origin na.mirror.garr.it
500
http://na.mirror.garr.it pclinuxos/2010/games pkglist
release v=Unknown,o=Unknown,a=Unknown,l=Unknown,c=games
origin na.mirror.garr.it
500
http://na.mirror.garr.it pclinuxos/2010/kde4 pkglist
release v=Unknown,o=Unknown,a=Unknown,l=Unknown,c=kde4
origin na.mirror.garr.it
500
http://na.mirror.garr.it pclinuxos/2010/nonfree pkglist
release v=Unknown,o=Unknown,a=Unknown,l=Unknown,c=nonfree
origin na.mirror.garr.it
500
http://na.mirror.garr.it pclinuxos/2010/updates pkglist
release v=Unknown,o=Unknown,a=Unknown,l=Unknown,c=updates
origin na.mirror.garr.it
500
http://na.mirror.garr.it pclinuxos/2010/main pkglist
release v=Unknown,o=Unknown,a=Unknown,l=Unknown,c=main
origin na.mirror.garr.it
500
http://ftp.vim.org pclinuxos/2010/megagames pkglist
release v=Unknown,o=Unknown,a=Unknown,l=Unknown,c=megagames
origin ftp.vim.org
Pinned Packages:
xfce4-weather-plugin -> (not found)
The xfce4-wheater-plugins is missing in all other Repository too. I attempt to use -for example- other ways (Headnet and others), but it (that weather plugin) was missing too, everywhere.
Thank you more, for your time wast in my little questions and for your attention to me.