The post sequence on the main page refreshing/reshuffling whenever you hit the back button! Why can't it just stay still so I can go through all the posts I want to read in succession? So often when I hit the back button I can no longer find the post I wanted to read next!
Same. Also I often end up browsing while logged out, see something I want to comment on, and log in, well, logging in brings you back to the main page and the post that you were looking at is impossible to find again haha. But I love this site, in the end its a minor complaint for me.