I've noticed this happening every once in a while, and it happened again right now tonight.
I logged on AA.com to see if my recent activity posted, and when I went to 'View My Miles', it's showing zeros! No errors or 'updating' messages, just zero miles, zero points, zero everything! The only thing left is the EXP status!
Now, I know it's just a glitch, maybe some kind of midnight batch update thing, but with the discontinuation of paper statements, boy does that wake you up... It's gone, all gone!!
Sami