A common text editing command is command-arrow, which skips to the previous word. I use it so often that I don't even think about it. It works fine when you're in the new post or full reply page. But when I press command-left arrow in the Quick Reply window, it navigates to the previous page.
This drives me CRAZY. I've typed a two paragraph reply to someone and it's gone, there's no way to get it back with page forward. Sometimes I'm so angry that I don't bother re-typing my reply.
Please, please fix this. I'm seeing this in Firefox 3.0.3, but I believe it's happened in Safari as well.
(Obviously this just happened to me again. It happens once out of every 10 times I post to the forum.)