Last week I updated WP Facebook Open Graph and since then my links when shared directly or via the LIKE button on Facebook no longer pull an excerpt or thumbnail.
Previous/older links and post do, but not anything that's recently created. I deleted WP FOG and tried NextGen Facebook Open Graph which crashed the site.
I ended up removing all Facebook plugins (I had the Facebook comments plugin installed, which worked but gave a Error Parsing message) and still the same issue.
I really rely on the ability to share post on Facebook :( I've had a few people tell me it's my permalinks or the ID associated with the plugin but none of those items changed since I updated and this plugin has been running fine since May 2012.
This works (pulling wrong images though) - http://thatish.com/2013/03/31/true-blood-season-6-tease-1-truebloods6/