When I try to install something from the Ubuntu Software Center, the program doesn't install. it only starts the installation, but nothing else happens. I typed the password correctly, but nothing happens. Even after waiting for hours, nothing is installing.
closed as too localized by Luis Alvarado♦ Mar 14 at 15:19
This question is unlikely to help any future visitors; it is only relevant to a small geographic area, a specific moment in time, or an extraordinarily narrow situation that is not generally applicable to the worldwide audience of the internet. For help making this question more broadly applicable, see the FAQ.
Based on your "apt-get" error someone/something broke one of the software installer componentes by changing the apt-get permissions. If only the apt-get binary was changed you can fix it with:
It is likely that the change on apt-get is the result of an accidental chown/chmod which affected more permisions that should not be changed, if you did a recursive chmod I strongly recommend to reinstall or restore from backups (if available).