Thanks, but no Windows here...
So, ftp.cadsoft.de has version 5.12 available. After downloading it, and then installing ia32-libs, and then finding a libpng12 (removed from Ubuntu...?) and then installing libjpeg62 and so on...
Finally it runs and asks for my license file (eagle.key?) AND the 10 letter key (the contents of the file???)
And then it says (in German) that this license doesn't work with this key!
But then I copied my old eagle directory from some ancient drive to my home directory, changed ownership of /opt/eagle to myself (just for fun) aaaand..... IT WORKS!
Gods! The UI is crap. :-)