Manually check podcasts, highlights the wrong box/can't clear boxes

When I try to manually add additional podcasts to my ipod touch by clicking on the check box for the desired episode, iTunes instead fills the check box for the podcast above the intended podcast.

Example: If I click on "Episode 1" at the bottom, Episode 1 won't be highlighted, instead Episode 2 will be highlighted.

Also, once a box is checked, it won't let me EVER uncheck it.