Last Google Page Rank update was on 28th May, and this is really shocking that Google updated Page Rank again in one month.
Google usually updates Page Rank on 3 months intervals.They updated PR on 24 & 25th June again.
Reasons behind this are many: Google may have decided to update Page Rank every month. OR last update had some bugs OR they have changed their page rank algorithms.
Anyway,it’s good for me.My one site got PR0 to PR1.What about you ?