Ubuntu apt-get installation problem or Unable to lock the administration directory (/var/lib/dpkg/) is another process using it

Help links:

http://askubuntu.com/questions/688338/e-sub-process-usr-bin-dpkg-returned-an-error-code-1-related-to-google-chrom

http://askubuntu.com/questions/15433/unable-to-lock-the-administration-directory-var-lib-dpkg-is-another-process

http://askubuntu.com/questions/136881/debconf-dbdriver-config-config-dat-is-locked-by-another-process-resource-t