I am trying to install Gmsh in 12.04 x64:

xxx@sjb-linux:/320/installslinux/gmsh$ sudo apt-get install gmsh
Reading package lists... Done
Building dependency tree       
Reading state information... Done
Some packages could not be installed. 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 information may help to resolve the situation:

The following packages have unmet dependencies:
 gmsh : Depends: libmed1 (>= 3.0.3) but it is not going to be installed
E: Unable to correct problems, you have held broken packages.
xxx@sjb-linux:/320/installslinux/gmsh$ 

I have now tried all the advice I could get

sudo apt-get -f install
sudo apt-get clean

with no success, these commands report absolutely no problem.

I'll appreciate help.