[Plug-in] WordPress.com Stats shows no statistics

Not hard to explain really. According to the statistics no one is visiting my blog. While I know my blog gets very little traffic I know as a fact I have had visitors as I have had comments left for me! I also do have some blog posts that do get regular search engine driven traffic.

I am assuming the plug-in is installed correctly as it is listed in my plug-in list and I see the statistics in my dashboard, etc. Any ideas why this might be occurring?