"Share This" plugin grabs wrong URL


When I try to share a post on my blog by using on the Share This plugin, the plug, rather than grabbing the URL of the page I am on, always grabs this:


Which is the page for Firefox Personas.
I have tried clicking from inside Chrome with the same result.

This happens when I share with Twitter, Facebook and even email.

Should I just deactivate an then reactivate the plug?