posted on Mar, 31 2012 @ 01:52 AM
I could be completely wrong, but I think that after a thread has gone a month with no activity it will fall off of the subscribed threads list. I had
the same thing happen, I subscribed to a thread to be able to go back to it (it was a super long one) and it had not gotten any new posts for quite a
while, but before I could finish reading it, it dropped off my subscription list. I knew the name of it and was able to find it again, and once I got
to the end of the thread, there had not been any new posts for a bit over a month. Another time, someone posted a link in a thread to a related older
thread. The older one was from about a year before and I subscribed to it so I could go back and read it later, but it didn't show up in my
subscription list at all.
So, this is completely a wild guess, but maybe this could be how the subscription list works. If not, I hope a mod will be able to answer for you.