I had posted a response to a discussion board - part of a homework assignment. However, my post in that discussion thread is not showing up. I've had to submit my response in an email to my instructor (who pointed out that I hadn't answered the discussion) and it will be graded as a late submission. Another student told me he remembers seeing my post, but again, I can't find it. Has anyone else ever had this problem? Is there a way to recover the post - along with the date that it was posted?