Segmentation fault while running apt-get update

I am using Ubuntu 14.04 and when I try to run

apt-get update

It gives an error

Reading package lists... Error!
Segmentation fault

What could be the root cause of this? And how can I fix it?

1 Answer

The mistake was in sources.list I had duplicate source lists. So it was trying to read them again and again and failing to fork. I rebooted my machine. Deleted the duplicate sources. Its working all fine and good