It looked like it went down Weds night. When I called in this morning they had no idea when they would be getting it back. Sounds more like this was an unplanned outage. Just when I was needing to check on a bunch of availability..
Still not working! I just put together a last minute trip and still need to make changes. It's easier for me to see what may be available on-line and calling MS for help only when needed.