Guys this fixed the problem for me, first of all the problem is in the iTune library vs the iPhone, or better yet in the way the new iPhone softaware works with the iTune music library.
1) Open itune and click on music
2) Highlight all your songs
3) Open the information window (command i) and select option
4) In volume adjustment the volume bar will be set on "none" unless you have all your songs
set at a different level, in any case move the bar anywhere "plus" or "minus", close the window allow iTune to set all your songs to the new setting, repeat the process and bring it the bar back to "none",
again close the window, allow iTune to set all our songs to none this might take a while depending
on how many songs you have
5) Last plug your iPhone in your computer and when it shows up in iTune click the iPhone then select music and finally sync, all your songs on your iPhone will be sync to the iTune music library new setting and the problem will be permanently gone....