I upgraded my 2G to 3.0 and have issue with sound. If I have my headphones on, all sounds work. If I take them out, I get no external sound, not from youtube, ipod, or any applications. And the weirdest thing is that that Volume Bar dissappears!! It re-appears when I put my headphones on. ??!?!? The only time my external speakers work is when I put someone on speakerphone and then it works....

pleassse help if you have any idea..

Thanks in advance