none repsonsive 'back/enter' button

[Guest smith2001]

after installing the "cleartype" twaek i found that the return button on the right of the pad no longer was listened too. well it was, i would be in a sms and press it to back to the inbox and it would not (if pressed for more than 2 secs it would proceed to delete the entire sms), then i'd press the joystick down and then it would go back to inbox and move down a text, like it did what it was remembering, anyone help me on this ?? its like my phone is breaking little by little.

it seems this error goes and returns as it pleases on my E200, some1 please help

smith