Trying to install those feisty packages, I end up with a lot of dependency which would force me do downgrade a lot of other packages. Am I supposed to follow the full dependency? packages are really a lot, for example:

dpkg: dependency problems prevent configuration of xorg-dev:
 xorg-dev depends on libxevie-dev; however:
  Package libxevie-dev is not configured yet.
 xorg-dev depends on libxfont-dev; however:
  Package libxfont-dev is not installed.
 xorg-dev depends on libxkbfile-dev; however:
  Package libxkbfile-dev is not installed.
 xorg-dev depends on libxkbui-dev; however:
  Package libxkbui-dev is not installed.
 xorg-dev depends on libxmuu-dev; however:
  Package libxmuu-dev is not installed.
 xorg-dev depends on libxres-dev; however:
  Package libxres-dev is not installed.
 xorg-dev depends on libxss-dev; however:
  Package libxss-dev is not installed.
 xorg-dev depends on libxtrap-dev; however:
  Package libxtrap-dev is not installed.
 xorg-dev depends on libxtst-dev; however:
  Package libxtst-dev is not installed.
 xorg-dev depends on libxv-dev; however:
  Package libxv-dev is not installed.
 xorg-dev depends on libxvmc-dev; however:
  Package libxvmc-dev is not installed.
 xorg-dev depends on libxxf86dga-dev; however:
  Package libxxf86dga-dev is not installed.
 xorg-dev depends on libxxf86misc-dev; however:
  Package libxxf86misc-dev is not installed.
 xorg-dev depends on libxxf86vm-dev; however:
  Package libxxf86vm-dev is not installed.
 xorg-dev depends on x11proto-bigreqs-dev; however:
  Package x11proto-bigreqs-dev is not installed.
 xorg-dev depends on x11proto-evie-dev; however:
  Package x11proto-evie-dev is not installed.
 xorg-dev depends on x11proto-fontcache-dev; however:
  Package x11proto-fontcache-dev is not installed.
 xorg-dev depends on x11proto-gl-dev; however:
  Package x11proto-gl-dev is not installed.
 xorg-dev depends on x11proto-record-dev; however:
  Package x11proto-record-dev is not installed.
 xorg-dev depends on x11proto-resource-dev; however:
  Package x11proto-resource-dev is not installed.
 xorg-dev depends on x11proto-scrnsaver-dev; however:
  Package x11proto-scrnsaver-dev is not installed.
 xorg-dev depends on x11proto-trap-dev; however:
  Package x11proto-trap-dev is not installed.
 xorg-dev depends on x11proto-video-dev; however:
  Package x11proto-video-dev is not installed.
 xorg-dev depends on x11proto-xcmisc-dev; however:
  Package x11proto-xcmisc-dev is not installed.
 xorg-dev depends on x11proto-xf86bigfont-dev; however:
  Package x11proto-xf86bigfont-dev is not installed.
 xorg-dev depends on x11proto-xf86dga-dev; however:
  Package x11proto-xf86dga-dev is not installed.
 xorg-dev depends on x11proto-xf86dri-dev; however:
  Package x11proto-xf86dri-dev is not installed.
 xorg-dev depends on x11proto-xf86misc-dev; however:
  Package x11proto-xf86misc-dev is not installed.
 xorg-dev depends on x11proto-xf86vidmode-dev; however:
  Package x11proto-xf86vidmode-dev is not installed.
 xorg-dev depends on xserver-xorg-dev; however:
  Package xserver-xorg-dev is not installed.
dpkg: error processing xorg-dev (--install):
 dependency problems - leaving unconfigured
Setting up xserver-xorg (1:7.2-0ubuntu11) ...


   and often each of these packages has its own dependencies...
   Thanks,