E: Could not get lock /var/lib/apt/lists/lock - open (11 Resource temporarily unavailable)
E: Unable to lock the list directory
After searching on Ubuntu forums I found the solution to solve this Problem.
Use following command to see is their any synaptic pkg manager running?
$ ps -e | grep apt
If yes, then kill all those processes using
$ sudo kill -9 processID
Then remove lock file from ur system:
$ sudo rm /var/lib/apt/lists/lock
Now try to update ur system. It should work. Atleast it worked for me.