Several of us are having problems with disappearing posts. See balzaccom's post today in the Trip Reports forum. I've had a few (a couple today) in which the text disappeared when I hit the "submit" button. Balzaccom and I both have PMs in to Packlite.
Bobito9 also reported a disappearing post (after it was posted). I am sure that no mod would delete a post from a regular member (as opposed to spammers) without notifying him/her! I've had a couple of posts I couldn't find later, but I couldn't remember if I had actually hit the "submit" button. I'm going to watch carefully and document from now on.
If anyone else is having difficulties, please report!
May your trails be crooked, winding, lonesome, dangerous, leading to the most amazing view--E. Abbey