Hi Im using sonyericsson x10i android 2.1. Please help me with this! I have installed many applications from the android market and I don't know which but an application killed the 'android' apk in my x10i. I could see the killed apk in home but when I tap it says that the apk is not installed. I'm sure I did not delete or uninstall any apk called 'android'. Because of this happen I could never use the menu key on middle. And when I press the power key there's is only one option now, that's 'switch off'. I tried a lot to recover this but unfortunately I could not find any apk nor any help to recover this. This is why I joined this forum. Hope this would be a great place. Please Help! I don't want this phone if I can't use the menu key. PLEASE HELP.