Too many posts in one thread (I don't remember exactly how large it was, but it had multiple tens of thousands of posts) caused all sorts of forum issues. Made it take longer for you to get to wherever you were going, and often caused certain parts of the forum to be completely unavailable for sustained periods of time. The result of all this was the deletion of the original 100,000 post thread before it had reached its goal. A continuation of it was attempted with a number of 5,000 post threads, which were intended to be added together to complete the 100,000 post thread. However, the project did not reach its goal before the deadline (the arrival of Prince Caspian in theaters) was reached.