First I installed a tar file from : www.sixxs.net/archive/sixxs/aiccu/unix/aiccu_current.tar.gz after that I used sudo apt-get install aiccu I am getting the follwing in the terminal: The clock is off by 20204 seconds, use NTP to sync it! Files /usr/share/aiccu/conf-templates/aiccu.conf and /etc/aiccu.conf differ start: Job failed to start invoke-rc.d: initscript aiccu, action "start" failed. dpkg: error processing aiccu (--configure): subprocess installed post-installation script returned error exit status 1 Errors were encountered while processing: aiccu E: Sub-process /usr/bin/dpkg returned an error code (1) I am using Ubuntu 12.04 and is connected to internet through tethering.I am pretty new to all these stuff. please help! Thanks in advance.