I thought it was worth reminding our newer members of the need to check that you're in the right forum area when you start a new thread asking for help or advice. When I spot a thread that's in the wrong area I'll move it, and when I do that I post a message in the thread, telling the originator where it has gone. Sometimes people untick the email notification box, so they don't receive an email alerting them to my post - they think the thread has been deleted.
If you find that your thread has mysteriously vanished, go looking for it in other forums areas - the chances are that I've moved it. Even better, make sure you're in the right forum area before you start your thread in the first place.