Why can't I post comments for a video on youtube?

How do I post comments on YouTube????????

• On every video, it is very self explanatory. You type in your comment in the comment box and then click the "post" button. The thing is every time I try to post a comment, after I click the "post", it always says "Error, try again" in red bold letters. Every time I try. I'd click the "post" button 999999999^99995865^435897s of times and no matter what it'll always say "Error, try again" in red bold letters. Can someone help me out? I can't speak my mind on youtube. What is the problem?? ........thnx

• Answer:

  Well I don't know. Sorry because it works fine for me and has been since I can remember.