Close tab buttons are not visible on every tab, how should I fix this?

Hi there; After updating to FF5 I have found that I no longer have a close button on all my open tabs. A close button becomes visible once I select a tab, but unselected tabs cannot be closed unless they are first selected. The end result is if I want to close a tab I first have to select it. Simple version: I want to have a close button visible on ALL tabs at ALL times. I have tried using the browser.tabs.closeButtons option, but no value 0,1,2, or 3 seems to be getting the job done (default was 1 when I first opened the file) Any and all help would be appreciated!