http://www.unix.com – Hi, I am using ubuntu 12.04 and every time I installed new program or do: Code: sudo apt-get install -f I get the following mesage: Code: Download done. sha256sum mismatch jdk-7u3-linux-x64.tar.gz Oracle JDK 7 is NOT installed. dpkg: error processing oracle-java7-installer (--configure): subprocess installed post-installation script returned error exit status 1 Errors we (HowTos)