That's a good one, though I think I may win with this one.....
Boom
......before you click there, please note that it does not lead to a thread. It takes you to page 238 in the General GC2 section. Scroll down to the bottom of the old threads list, and you'll see 2 threads with the following dates....
January 1, 0001
.....I have succeeded in finding the most ancient threads of all time.
What's odd is if you click on either of the threads, it takes you to a much more recent date (2008?).