Face book zero counter showing zero

I’m using social ring plugin but I have a problem with the facebook share counter box. In chrome about 50% of the times I load the page the counter shows 0, the other 50% it shows right numbers. With firefox and IE it rarely shows the right number. What might be the solution for the problem? The page can be seen here: http://www.fantastec.fi/recruitment-most-fantastic-job/

http://wordpress.org/extend/plugins/wordpress-social-ring/