While it does not directly relate to taxes, this is important to share.
From Robert Flach's excellent blog, The Wandering Tax Pro, scammers have been calling and identifying themselves as AT&T phone techs doing a line check. You are requested to touch 9 then 0 then # and hang up. The problem is that this gives the caller access to your long distance info which they can use to bill long distance calls your phone. It seems many of these calls have come from prisons.