Replying to posts is no longer working

I am trying to reply to one of my threads, the text box is again not working on replies.

Hi,

I hope you are well. We have tested posting a reply in all major browsers (Internet Explorer, FireFox, Chrome and Safari) and it is working as expected. Can you please try again after clearing your browser cache moreover please tell us which browser and version you are using?



I am using IE8. It worked fine this time. Earlier it did eventually work, it just took five minutes for the page to load completely. The page loaded immediately this time.