Used at LAX for the 1st time today. Got a big X. Went to the counter, he scanned my passport, said go on thru. Went to where they take the pass, said go back, they didnt stamp it. So I tell him that, the officer says, lets go to the machine. Machine says too recent to do another scan. He sends me to secondary, they told him to stamp my X paper. He stamps it and walks me to and thru where they collect the passes. What a hassle. My buddy who was in C w me, got thru alot quicker and beat me to the lounge. I m sure it will get better.