I have used the Social Plugin before very successfully, but I'm having trouble with a new installation at PunkNews.co.uk
I have installed and configured the plugin and set up the social network APIs (very cool system btw) but when I place the widget where I want it (below the standard WordPress login) no icons appear. I'm using the standard BuddyPress theme, and this site is set up almost identically to the one that Social Login works well on. I have compared the way I have set up both sites and can't spot any differences.
Here's the core I see in the widget when using FireBug to look at it: