I had these keyboard problem almost a month now.Ever since i tried installing a keyboard theme from installer it instead ruined it!! Now its all glitchy and annoying as hell..but i sort of found a way of fixing it.Okay, you guys know you cant even see the letters and cant even type? How about using the japanesse keyboard huh? All of since i being using that one and its pretty good but smaller. Some how the japanesse keyboard is not affected but it still works as a mini keyboard. Just go to SETTINGS then GENERAL and then KEYBOARD and set the japanesse to ON. Another one is to try getting used to your glitchy keyboard like me, i cant even see the keyboard letters but i already now how to use it!! ill keep you guys updated to this problem and when i do ill post it here, thanks.