Thought I'd share my installation experience while it was fresh in my mind...
Note Medusa is a 32-bit application so needs 32-bit libs to be installed,
which you're unlikely to have on a 64-bit Ubuntu machine. Hence the :i386
part of the sudo apt-get command.
Libs I needed before Medusa installer would run:
sudo apt-get install libglu1-mesa:i386
sudo apt-get install libXt-dev:i386
Run Medusa from the command line in order to see what's wrong, otherwise
a frustrating flicker will be seen as a command window evaporates before
you can read the error messages.
Note: Version number is bound to change at some time.
Libs I needed before Medusa would start:
sudo apt-get install libbz2-dev:i386
sudo apt-get install libgomp1:i386
sudo apt-get install librsvg2-2:i386
There may be others, and libs may be needed at run-time but the principle is the same - always download the 32-bit version. I didn't need to create any symlinks to make the installation work, at least as far as starting the application.