Look in 'my profile' (top left) to view the total of your questions/answers. This will tell you if any have been removed... though this is unlikely unless you're in the habit of posting dodgy stuff. Which I assume you're not!
I had an email from AB techies which said my account had probably been suspended because of "over posting". Where in the terms does it say you are limited to a certain amount of posts? I'm sure I don't know, but all seems to be up and running again as normal. Thanks for answering :)