I have recently noticed a problem with the default Samsung keyboard. I don't know if it only started after the 4.3 update because I rarely use this keyboard. I used to use Perfect Keyboard exclusively but since the 4.3 update it has its own problems. So I tried using the default keyboard and here is what happens: The bottom row of buttons do not register properly. When I hit the space bar, it registers the letter above (i.e. x, c, v, b, n - depending on where I hit the space bar). Likewise the period key registers m, enter registers backspace and the microphone/settings button registers z. Also, the backspace often registers l but not all the time. I have tried the "clear data" trick but that did not work for me. After I reboot the phone, the keyboard will work for a while but then it gets screwy again. This only affects the bottom row and backspace key. Any ideas? In the meantime I am using the Google keyboard. I may end up sticking with it. Thanks.