My Nexus S 4G has been running Gingerbread since I got it upon its release. Until a couple weeks ago, I never used the screen lock feature. Now I'm using the pattern unlock. Works great. When I lock the screen with the Power button, I hear a faint 'click' sound. This is the lock sound. It's always done that. When I unlock with the pattern, no sound. It's always done that. The other day, I got the Ice Cream Sandwich update. Still using the pattern unlock. Still no sound when I unlock with the pattern. Today, for no obvious reason, my phone is playing a sound when I unlock it with the pattern. (Actually, I just turned off screen lock altogether and it plays a sound when I just turn the screen on with the Power button.) I see alot of people are having issues getting their unlock sound to play. I don't want the unlock sound. It's annoying, especially if I'm having a texting conversation. Is there any way to stop the unlock sound from playing? Thanks.