http://www.ua2go.com/htm/mpavail.htm doesn't work either for SAVER availability. Maybe it's related. UAL.COM support of course told me it was MY problem, that I was obviously selecting blacked out dates or something. I guess then United's black out dates are January 1, 2002 through December 31, 2002 for all domestic and international sectors.

Or maybe United has fired all the people who knew anything about the systems.