I too am waitlisted at UW. I spoke with the dept secretary recently and she confirmed that movement is minimal right now and that the class is considered full. I get the feeling that there isn't going to be much movement because of the economy, but keep in mind that if some of the higher-ranked schools start admitting now into next month, there should be a little movement. Also, because of UW doesn't require a seat deposit, I'd imagine some people are holding out until the last minute (either because of other wait lists, job offers, etc) to say they aren't going. Some new supporting materials were coming in this week, so I'll double check with the admissions dean next week and check in again.