Since I updated to 4.0, my phone is running slower than ever now. My dad has complained about the same problem. Hitting any button(application, text send, function button, etc.) there is an average of a 2 second delay. I have to hit the HOME button numerous times to get it to work. My phone is utterly annoying now. Also, "multi-tasking" doesn't even work for me. Is anyone else experiencing these problems?