i am having problem, my 'menu' and 'calls' key have problem..
sometimes its automatically pressed and sometimes its never pressed...
specially when i want to make call, this 'menu' button becomes 'end' button and automatic pressing results in ending of call.

i am serious problem these days, does upgrading firmware would solve the problem, also joystick is problem as well..

Current software version:
CXC1250210
R1KG001
070418
Sony Ericsson