Minor bug fixes:
After you send a PM, now you get menus on your "Your message was sent" screen.
I also wasn't getting all the appropriate session variables cleared after sending messages, which I've fixed. Keep your eyes open for any strange activity when posting messages, especially when using Preview, since it relies the most on these variables.
What I'm most worried about happening is Previewing a message, then clicking the "Edit Message" button and getting your message blanked. It didn't do that to me in testing, but that used to be a problem and I want to make sure it doesn't become one again.