I just realized that 18,000 points were erroneously taken out of my account. I was in the middle of doing an award reservation when I got called away from the computer. When I returned, I attempted to complete the reservation, only to get the message that I had been logged out due to inactivity. I never got a chance to reattempt the reservation, but I learned today that the 18,000 points were taken out anyway even though no reservation was ever completed.