At my site:
We are facing issues regarding adding comments on to the pages.
With Facebook comments installed and working till March 2013. We didn't discover something is wrong with core commenting system also. Due to FB's application migrations in Feb 2013. The comments stopped working. Also the core wp comments.
Now I have tried almost all third party plugins for adding commenting and also tried hard to recover the wp commenting back on.
Nothing was successful. I wonder if some plugin is making issues or if HTACCESS is creating problems. But no, there was nothing wrong with HTACCESS its not blocking comments uri.
And the plugins I have tried disabling them all and tried switching themes also. No success.
Please help. And guide how we can re- enable any of commenting systems.
The FB app and plugins seems to be all in function. Just the data is never been called and it doesn't appear in post scripts.