I was going to suggest the same thing with the security feature. If we are logged in we shouldn't need it.

Also what sblt said. I have seen and used the check box below the reply window to save sent messages, but maybe the check box could be changed to "don't" save sent messages and default would be to save them.

It would be nice to have PM conversations grouped by each user so I don't have to scroll up and down to see what has been said.
Guess my memory is getting bad...help out an old guy..