I tried to send a private message to another user, and when I pressed the "send message" button, there was an error message indicating I had to enter a recipient and that the body of my email could not be blank. What-?? I had typed a very lengthy, detailed message, with the username in the 'To' field. Neither Ctrl-z (undo) nor the Back button could save it. I had made sure the "save a copy" box was checked, but of course the message was not actually sent and was lost. This has happened before and is quite frustrating -- any suggestions?
FYI, I accessed the Compose Message page by clicking on the other user's profile and then the "send a private message" link.
If there is some sort of time-out feature, then users should be warned of this.