I keep my iPhone in my pocket, and I make sure to turn it on Silent so it doesn't go off during work (because they're forbidden fruit at WORK).. but after I'm done working and check my phone, I noticed that while in my pocket, the Silent button was moved back to Not-so-Silent Mode.
Anyone else have the problem/notice that the Silent button isn't so great..? I always keep my ringing volume at the minimum just in case it would go off at work. Which it has - but luckily, I work in a warehouse where machinery drowns most noises.