On my 3.0 ipt2g, I have this strange problem. With the rockers on the side, I can adjust the volume up fine, but adjusting it down often has no effect. I have to keep pressing volume down several times before it will finally adjust. My sister's iPod, which is in the same configuration and has the same above issue, also has another problem. The volume display won't go away from her home screen. If you try to adjust the volume with the rockers, it flickers for a second, then goes back to the previous setting. None of these iPods have had any mods or apps installed recently, so I don't know what could cause those problems.