Hi all, I require your help in fixing this issue with the sleep/wake button. I have purchased this iPad 10 days back and all of a sudden today a problem has come up with the sleep/wake button. On pressing that button it is not locking the iPad neither it is locking on closing the smart cover. Although if I press and hold the button it does give me the option to power off the iPad. I have checked in the settings and smart cover lock is on. I do not know how all of a sudden it started. Please advice.. Ritesh.