I know how to click on the box to the left of a title so that I can read the thread from the last post that I had read previously. This is particularly helpful in those very long threads, like the class of XXXX.
Does the forum determine which is the last post read based on when you were on that thread, or when you were on CC?
Lately, it seems to be only going back to a post that would coincide with the last time I was on CC, even if I was in a different forum than the one the thread is in.