I've had these problems and more. Over the course of several days, I can't tell you how many "Ooops" I've seen. Like others a few days ago ALMOST booked a Rapid Rewards flight only for it to bomb out in the last step when it told me no seats were available on one leg. Other times I couldn't even log in, or Rapid Awards weren't available. Yesterday I called wishing to have an agent help me. After 45 minutes waiting I got an agent, and even HE couldn't do it. After more than another hour on hold when they attempted to fix it, they just told me they would call me back later. 4 hours later they called with my flight info.

This is bad. They need to roll back their software and maybe do some testing before they try again.