So I never put anything in my pocket with my Hero. My clothes are nowhere near tight. Most the time my phone ends up buttons hanging out of my pocket. And yet, somehow, I still get the pocket unlock from what I can only assume is the double menu button trick. And yes, my phone has randomly called and texted people as well create strange new contacts for me and taken random pictures while in my pocket. For those of you who have not had this happen, congrats to you. For those who have, I can sympathize. Menu twice to unlock is a useless feature if you ask me. And yes, I'm rooted and have not taken the time to fix this. Why you ask? Because it only happens once in a great while and has not been a major problem for me. To the OP, either learn to live with it, or figure out how to fix it. I'm pretty sure there is a flashable file over on xda somewhere that can help you out if you are rooted.