Email Subscriptions Sent List is not correct. At all...

I'm stumped here. Our Subscribe by email plugin seems to be doing some strange things. We have a test site with one subscriber. When I make a test post, that subscriber receives an email notification perfectly, but when I click on the logs for the sent emails, I'm seeing all kinds of strange data. I'm seeing numerous emails that say "User Content Empty" as well a a bunch of other emails that have the status of "Sent". We only have one subscriber though, so I don't know where this additional data is coming from. If you look at the screen shot, it clearly says that there was one subscriber processed, but down below in the logs, I'm seeing all kinds of strange emails.

Has anyone else experienced this? I'm at a complete loss as to what to do.

Here is a screen shot of my subscriber list clearly showing only one subscriber as well.

Thanks in advance for your assistance!