I was looking close at the shelter last night (Black Diamond Megalight). The one night we experienced really strong winds all night. We had rocks piled on each peg (8" stakes) to hold the tent down. On some of the seams the stiching has come un-done for short sections! Guess I'll have to fire up the sewing machine and do some repairs. I'll post pics of the damage later.
BD has a killer warranty if you don't want to do it yourself they will take care of you.