A lot of people have reported PageRank update for the inner pages of their sites recently. I wonder how did it go? In my case, most of the pages that had Pagerank before got reset to 0. I wonder if others have the same experience?
That all depends. The PR of homepage will change during a big change; However, when meeting a small Google's update, the PR of inner pages will change.
Generally after 3 - 4 months Google update PR .Suppose in some point of time your website's one inner page has 100 back link with 0 outbound link and PR 1 .After 3 months that page has 500 backlink with less OBL ,there is high chance that your PR will increase in next PR update. Opposite happen i.e PR decreases when that pages loses back link and increases OBLs. There are some other factors also that causes page rank fluctuations.