Originally Posted by SEOPunk
May be it is happening due to the poor backlinks in your site, so try to use good quality backlinks. That will surely help in increasing the traffic of your site.
What was being asked about was why a new page was initially PR n/a and then became PR0,
and this isn't connected to backlinks or traffic.
A new page will be PR n/a simply because Google has not assessed it yet for PR. In this case, when Google did assess it, it was given PR0. It isn't a downward move or any kind of move, it is just going from "we don't know yet" to "we currently rank it 0".