The following packages have unmet dependencies:
  virtualbox-4.1: Depends: libpython2.7 (>= 2.7) but it is not installable
                  Depends: libqt4-opengl (>= 4:4.7.2) but 4:4.7.0-0ubuntu2~lucid1~ppa2 is to be installed
                  Depends: libssl1.0.0 (>= 1.0.0) but it is not installable
                  Depends: libstdc++6 (>= 4.6) but 4.4.3-4ubuntu5 is to be installed
E: Broken packages