Yes, about the missing P.S. part, the user told me that she edited the PM after the email was sent. But it seems to me that if the message was edited, it should result in another email. Otherwise one might think they have read the message (in email) and may not look on the bulletin board itself.
About the blank PMs, here are the details from two users:
User 1. The text is all that's missing; all the surrounding info. is there, including the box the text should be in. For now I am still Copying before I hit Submit, although now that I think about it my PM partner told me when he hit Edit his text reappeared for him, though when he hit Submit it disappeared again.
User 2. I've had problems with messages not appearing on-screen when hit the submit button. Not visible to me, nor to the recipient. Typically the problem arises with longer messages, more than three or four sentences, usually with spaced paragraphs (two returns), but it doesn't seen to be consistent. Another user has had the same problem in messages to me. I've just discovered that the text is visible in the text composition box if I click the Quote button at the bottom of the message.
Has anyone else noticed this problem? Any fixes? Thanks!