Wanted to reply to a poster on this addon (http://wow.curse.com/downloads/wow-addons/details/nametagswitcher.aspx) and got taken to a general error page (A server error has occurred) when trying to do so.  I then went back to the page and posted a comment again, but it was a general post rather than a reply, so i deleted that to try again, and now I can't post a comment at all.

To test I tried the same on the comments page here http://wow.curse.com/downloads/wow-addons/details/buffwatch.aspx, posted a test comment, deleted it.. and now get an error if i try to post a comment.

edit: only just noticed other post relating to this.  Hopefully this one might still give you some more info on it tho.

http://www.curse.com/forums/t/122807.aspx