I believe they had to disable it because it was causing the forums to explode. That's also why there's an incredibly strict search time. Edit: ^I was wrong.
search.php?author_id=1261788&sr=posts Click Profile on the bottom of your post "Search user's posts" or on the top right corner under Logout. "View your posts"
Like Nap explained. The first way will shows your posts posts by post. The second one will display with all the threads you replied with and it ordered by the most recent thread with a post. You can also click on User Control Panel in the forum navbar and there is also another link 'Show your posts.'
