Not sure if this happened when updating to WordPress 3.4 or the recent update with Digg Digg but the Facebook Share and Like are not showing on the floating bar.
The spacing is there however, the buttons are not appearing. I have Digg Digg on two sites - one just luanched and one in dev - both running the same them and both showing the same issue.
So just to verify I did a fresh install to another dev site running a differnt theme and had the same issue.
All sites are running Genesis. Here's one of the dev sites - http://wpmoshpit.com/eastern-panhandle-west-virginia/ It should be showing G+, FB-share, Pinterst, Twitter, FB-like, Buffer