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bharath@ubuntu:~$ sudo apt-get build-dep firefox

Reading package lists... Done

Building dependency tree      

Reading state information... Done

E: Could not open file /var/lib/apt/lists/ppa.launchpad.net_murrine-daily_ppa_ubuntu_dists_maverick_main_source_Sources - open (2: No such file or directory)

bharath@ubuntu:~$ sudo apt-get build-dep firefox

Reading package lists... Done

Building dependency tree      

Reading state information... Done

E: Could not open file /var/lib/apt/lists/ppa.launchpad.net_murrine-daily_ppa_ubuntu_dists_maverick_main_source_Sources - open (2: No such file or directory)