The last time that I know that I posted a message that had typos, it was as a result of my computer locking up and I wasn't even trying to leave the message or post a reply. I got the spin icon and had to shut down. When I came back on, there was the message with my typos. It was past the time for editing. I was stuck with a BAD message and it is still being viewed; it bothers me. I hate when I know I have a typo. "Rushing or tired" causes many of my mistakes--then my brain often reverses words on me (my for by, for example). So I try, but I do mess up.