Npm suddenly stopped working

My npm stops working for some unknown reason (install, update), although it worked all the previous time, I did not update nodejs and basically did nothing.

So, I tried running npm install and it started showing that it was in progress, but it lasted for about 10-15 minutes and then it failed. I've looked through various questions on stackoverflow but haven't found a solution.

Then I reinstalled NodeJS, did npm update -g npm

, but this command also didn't work. npm -v

gives me v2.10.1 and node -v

gives me v0.12.4

Here's a screenshot of my console just in case:

Has anyone encountered this problem? Could you please suggest any solutions for this?

UPDATE

Here's another screenshot when the whole process is complete:

So am I behind the proxy? WhatIsMyIP says I don't have a proxy ...