while waiting for the 2006 OS I took my chance and sent my 770 to be fixed yesterday. 770 had cracks on both sides of USB. At first only btw USb and power. There's no guarantee that the crack has stopped or is the only one to be found.
This talk about handling the device like with silk cloves sounds strange to me. This kind of every day- where ever- equipment should tolerate normal handling. I just wonder what would happen, if the 770 was accidentally dropped on the floor (which has not happened to mine)! I'm now eagerly waiting for Nokia's response and action.