The mail application was working great for me for a while, but all of the sudden I have a strange bug. Whenever I send a message, the "sending" status bar properly begins to move along at the bottom of the screen, but then before it completes, the screen momentarily goes to black and the iPhone home screen appears. When I click back on the mail icon, the message I sent is still there in what appears to be unsent form -- despite the fact that the message did actually get sent (I checked with a few test emails to myself). Then if I click "cancel" I have to go through the extra step of telling the iPhone that I don't want to save a copy in my draft folder. I've tried resetting the phone . . . to no avail. Has anyone else seen this bug?