I have a HTC Wildfire which has been working fine since I got it in Jan 11, however lately every time l get a an incoming call I am unable to drag the screen down to accept the call. This has happened on many occasions now, probably the last 20 calls I have received. It is very annoying as I end up having to call the person back, that's if I am fortunate enough to know who it is. Can anyone help me???