[Plugin: Protected Posts Logout Button] Says I'm logged out but returning to page – am logged i

I was excited to find your plugin as the previous one I was using is no longer supported.

But when I click the logout button I DO get a “successfully logged out” pop up. But then the page reloads itself and is still logged in???

What am I missing??

I have an mp3 player pulling through an iframe on the page. Could these be a conflict somehow?

http://wordpress.org/extend/plugins/protected-posts-logout-button/