Hi Guys am using a Sony xperia arc s. I upgraded from 2.3.4 to ICS 4.0.4 using the Sony pc companion, which prompted me to upgrade. After using it for about 18 hours, the display has conked off. Every time i touch the screen, it leaves a faint trail. Also the top of the screen displays coordinates for which area I have touched the screen (in x-axis & y-axis). I did not drop the phone. Infact this happened when I connected my phone to the computer for charging and clicked on the USB debugging button. I tried undo-ing, restarting etc but doesnt change anything... Please help...please!!!