I’m not sure if this is a bug or a feature but I’m wondering if this code in your functions.php (starting on line 104 in v.1.1.4) is really necessary:
return $title . esc_attr(get_bloginfo('name'));
What it seems to do is add the name of the blog after every title even in the RSS feed and it causes unwanted scenarios where the RSS title can be “BlognameBlogname” or “Blogname » PagenameBlogname”. I suggest removing this functionality in a future update.
As a side note, how often do these theme updates get pushed to WordPress? I know you have released the latest version (1.1.6) on October 10th but WordPress hasn’t suggested a theme update yet.