HCI Forum Topic DISS 720

Lately when I've typed messages in Yahoo from work (on lunch, of course), I've been part of the way though a sentence and the message is gone. I'll look in sent messages and will see that the partially drafted message has been sent 6 times. This has happened to me a couple of times now. I think it's the result of my hitting the TAB key in error, but I'm not sure.