Ability to allow/disallow comments gone

Did you just upgrade to WP 3.1 or install a new plugin? Have you changed theme to default twentyten theme and see if that corrects bad behavior.

I did not just upgrade, it has been a while nor did I install a new plug in. I did try to change themes to see if it would correct it, but it did not.

Ok, I looked at my pages and there is a comments section up through IntenseDebate plugin. But when I deactivated it, I still didn’t get an option. But at least I have comment ability.

And in your Settings > Discussion, Allow Comments is enabled?

Yes it is all enabled in there.

have you checked ‘screen options’ near the top right of the ‘edit post’ and ‘edit page’ pages?

Yes, I did that.

Has this been sorted?

No.

I had this problem but up on the top right I had to click Screen Options and click Discussion as it was not ticked.