How long does it take PR of a site to start showing? I've had my site for about 3 weeks now and it still doesn't show a page rank on the google PRChecker..
toolbar exports happen about four times a year, Nobody knows when the next one is, Internal PR is updated constantly.
The next google update should be about end of july / beginning of august. Sometimes you have to wait for 2 google updates to pass by before you get any PR on your website. I think that the age of domain is part of the Google algorithum for sure.
By the way you posted this in the wrong section. I would expect more from someone who has 240 posts...