I had my unlocked iphone running 3.0 charging on my laptop last night when i went to bed and when i woke up this morning i looked at my iphone and saw a black screen with a empty battery in the center with an elecrticity symbol underneath it. i have tried holding down home and power many times already and have had no success. i was able to put it in dfu mode and i tried to restore it but halfway through it died on me. i tried again and it did the same thing. i have worked on this all day and have had no success. i hope someone out there knows thats happening and can help me. thanks