Might it be?
Code:
/home/user> apt-cache policy libx11-dev
libx11-dev:
Installed: (none)
Candidate: 2:1.0.3-7
Version table:
2:1.0.3-7 0
950 http://update.eeepc.asus.com p701/main Packages
900 http://xnv4.xandros.com etch/main Packages
2:1.0.3-2xandros1 0
750 http://www.geekconnection.org xandros4/main Packages
