I started having problems when I upgraded to WP 3.4 and thought others would complain and it would get fixed. But that’s not the case. I have the latest version of this plugin installed.
Problem: Facebook, LinkedIn, and Twitter buttons are not working.
The Facebook button doesn’t appear, the Tweet button just says the word Tweet and it sort of works if you click it (but it only clicks the link, not the via @xxxx and no headline is pulled), and LinkedIn opens up a pop up and it just hangs (increments by 1, but doesn’t do anything).
G+, Pin It and the Share buttons seem to work fine.