[Nottingham] can't (re)install mplayer in Kubuntu

[Matt Bunter]

OK, how do I get around this problem?

root at wombat:~# aptitude install mplayer-386
Reading package lists... Done
Building dependency tree
Reading extended state information
Initializing package states... Done
E: Unable to correct problems, you have held broken packages.
E: Unable to correct dependencies, some packages cannot be installed
E: Unable to resolve some dependencies!
Some packages had unmet dependencies.  This may mean that you have
requested an impossible situation or if you are using the unstable
distribution that some required packages have not yet been created
or been moved out of Incoming.

The following packages have unmet dependencies:
  mplayer-386: Depends: libavcodeccvs (>= 2:20050417-0.0) but it is not 
installable
               Depends: libc6 (>= 2.3.2.ds1-21) but 2.3.2.ds1-20ubuntu13 
is installed.
               Depends: libfontconfig1 (>= 2.3.0) but 2.2.3-4ubuntu7 is 
installed.
               Depends: libpostproc0 (>= 2:20050417-0.0) but it is not 
installable
               Depends: libvorbis0a (>= 1.1.0) but 1.0.1-1 is installed.
               Depends: libxvidcore4 (>= 1:1.0.0-0.0) but it is not 
installable
               Depends: xmms (>= 1.2.10+cvs20050209) but it is not 
installable
root at wombat:~#                                                                           


So far I've done :

aptitude update
aptitdue upgrade
aptitude dist-upgrade

same for apt-get

and I still can't get back mplayer

regards,

Matt