I posted about this a couple months back, but I have always used this plugin with great results on all mine and my client's websites. However, on a website I created a couple months back, the SEO titles on all pages just stopped working for "no apparent reason". I changed every setting I could think of, but no luck. I thought i must have just been a fluke with that website. However, today, I was working on another site and the same thing happened. The description tag shows, but not the title.
Here is a link to the site from a couple months back:
All I get is"Mozilla Firefox"