First of all, you have the most useful plugin of all times.
We are using your plugin in our site. The only problem that we find is that "yellow" languages are not working properly.
When you press "Translate All" it seems it works, and visibility rules of flag icons are showed properly, and redirects to the correct page, but the content of the site is not translated for this language.
If you change the yellow to green language, all works OK.
Our wordpress is an Spanish installation and this plugins:
Google Analytics for WordPress
Google XML Sitemaps
Picasa Express x2
Quoted Comments Widget
Ultimate Taxonomy Manager
White Label CMS