I'm not sure since when I have this problem, but I've been using this plugin for a very long time now and never had any issues.
It might have to do with the latest plugin update.
Recently services like searchmachines, Google+ and Facebook cannot retrieve the SEO information (title, description etc.) anymore that the plugin is supposed to generate.
I'm really desperate as I seem to be the only person with that problem and I don't know what to do anymore.
I'm thankful for any kind of advice you can give me!
I just updated to WordPress version 3.5.1 and it didn't change anything.
I also emptied all caches.
I'm running out of ideas. Why did it suddenly stop working?
Here's my blog for reference.