No library found for this namespace error in PrimeFaces

This silly error message usually occurs if you are using a PrimeFaces 3.0 version onward. With older version of PrimeFaces (less than 3.0) we used to make the following declaration:

xmlns:p="http://primefaces.prime.com.tr/ui"

However from 3.0 the following declaration need to be used instead:

xmlns:p="http://primefaces.org/ui"

So far so good, hopeful the road block is lifted .
Enjoy it.