Hi VHG,
I'm posting this partly to see whether it actually appears. All of my posts earlier this evening simply disappeared, so I've got no great faith in this actually showing up.
However (assuming that you can read this) I can tell you that many 'deleted' posts are simply ones that you've accidentally duplicated because of AB's lousy server.
Here's the scenario:
You finish typing out an answer and click submit. AB's server receives it and adds it to the posts on display. However, AB's server fails to send you the data which will update your screen and display the additional post. (i.e. your screen seems to 'freeze'). Frustrated, and assuming that your post hasn't been received, you click 'Submit' again. AB's server again receives it but recognises it as a duplicate post, so it rejects it and increases your 'removed posts' score by 1.
It's happened to me quite a few times and I wasted ages trying to work out why I'd had posts removed (and which ones they were) before I worked out the cause of the problem.
Chris