Normally when an issue is posted I check the link you provide, then I try to replicate it on my machines. I am not able to replicate at my end, which generally means one of two things - either things haven't been correctly done at your end, or there is more to it than just the comment form setting.
My guess is that you have defined a static page called Perspectives and are setting that as your home page. In that case, what does the option 'Hide "Comment form closed" Message on Pages' have as selected? Is "Perspectives" selected in the list?