my iphone 3g started being weird Monday the mute switch would not work. the phone would be muted with the mute off. or it would change back and forth. blew out the dust and it seemed ok. but now I noticed the volume changing. but I found out it is when the power button is touched and it seems only when playing music though I am not positive about this. it also only raises the volume. I just noticed pushing the up volume is like pushing the power button.I did a restore yesterday and then this started. any idea's or am I stuck for a new one. of course it is off warranty by a month.