I linked an old post in this thread August 23rd of this year (2013). It is the second to last post in this thread as of this date. Here is the thread address of the thread in which I linked the old post.
At that time, the old link uploaded fine. Now, about six weeks later, the old post (again, linked in the 2nd to last post in this thread) does not upload. (Eg., Error 404 -Not Found).
I was trying to link another old thread. Has something changed?