sun-java6-bin fails to install on the live CD

Default spain repositories with multiverse enabled:

Configurando sun-java6-bin (6-00-2ubuntu2) ...
/usr/lib/jvm/java-6-sun-1.6.0.00/bin/java: error while loading shared libraries: libjli.so: cannot open shared object file: No such file or directory

(when aptitude install sun-java6-bin as root, first found it when installing ubuntu-restricted-extras)

reinstalling libjline-java does not help at all, as it doesn't contain the file. sun-java5-jre installs wonderfully (pulling java5-bin on its way).

Its on an ubuntu 7.04 recently installed and dist-upgraded (from the 7.04 beta CD), on which I installed a bunch of packages (build-essentials, eclipse, azureus...). Some of them might have broken java? in particular I seem to recall build essentials does install gcj... But I don't know how to check installed packages, I'm kinda new to apt.

thanks for the help; just ask for any additional info that might be needed...