I have a refurbished Droid 2 & there has been a few times when my phone will ring but my screen is black & nothing works for me to answer the call or to make the screen come on, including the power button. I have to remove the battery & restart the phone. After this happened a few times I done a factory reset. Then I lost Pdanet. I had been reading about rooting so when I lost pdanet, I decided to give it a try. I installed Gummyjar & there were no problems for about a week. Today it happened again. There hasn't been anything else that has caused my screen to do this. Any suggestions?