The following packages have unmet dependencies:
 g++-4.5 : Depends: gcc-4.5-base (= 4.5.2-7ubuntu1) but 4.5.2-8ubuntu1 is installed
 gcc-4.5 : Depends: gcc-4.5-base (= 4.5.2-7ubuntu1) but 4.5.2-8ubuntu1 is installed
           Depends: cpp-4.5 (= 4.5.2-7ubuntu1) but 4.5.2-8ubuntu1 is installed
 libgcc1 : Depends: gcc-4.5-base (= 4.5.2-7ubuntu1) but 4.5.2-8ubuntu1 is installed
 libstdc++6-4.5-dev : Depends: gcc-4.5-base (= 4.5.2-7ubuntu1) but 4.5.2-8ubuntu1 is installed
E: Unmet dependencies. Try using -f.