I have a 4gb iphone which has been unlocked using Carlos Valdosta's method, the phone works great, with the exception that when I am listening to music, and receive a phone call, after I get done with the phone call, and try to return to listening to music, I get a blank screen, with the exception of the very top line, the line showing the carrier, signal etc....I have to actually turn the phone off, and turn it back on to get the phone menu screen.....anybody out there have the same problem, or an answer to the problem?????? thanks

That doesn't sound about right. May be you can try doing a restore (to 1.0.2 of course).