@chugunv: I am unable to reproduce your problem. Does running cntlm with debugging information provide any clues?
$ sudo service cntlm stop $ sudo cntlm -v -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1009436 Title: package-data-downloader hangs forever when attempting to download through cntlm proxy To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/cntlm/+bug/1009436/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs