Folks here might want to check out a thread in the AA forum on TOBB that was started two days ago by tonytifao. This has attracted a lot of attention and about 360 posts. The executive summary is that a six year EXP received an email on Friday evening saying his account was suspended while AA investigates, apparently focusing on an award ticket for his wife and two other award tickets given to other people, with different last names and addresses. He called EXP desk who could not tell him much except that his planned flight to the USA from Brazil over the weekend was OK. At the airport, he was denied boarding and no one was available to explain or do anything. He's returned to post updates and seems to be a five year member with only a couple dozen posts. He did succeed in traveling to the USA on AA yesterday and has been communicating with their audit/fraud department. This is also discussed briefly on travelingbetter.com. If anyone finds his posts on airliners net, it would be interesting to have links.