The following packages have unmet dependencies:
libstdc++6-4.6-dbg : Conflicts: libstdc++6-4.4-dbg but 4.4.7-2 is to
be installed
libstdc++6-4.6-doc : Conflicts: libstdc++6-4.4-doc but 4.4.7-2 is to
be installed
libstdc++6-4.7-dbg : Conflicts: libstdc++6-4.4-dbg but 4.4.7-2 is to
be installed
Conflicts: libstdc++6-4.6-dbg but 4.6.3-14 is to
be installed
libstdc++6-4.7-doc : Conflicts: libstdc++6-4.4-doc but 4.4.7-2 is to
be installed
Conflicts: libstdc++6-4.6-doc but 4.6.3-14 is to
be installed
E: Unable to correct problems, you have held broken packages.