Thanks Lee, This morning (-1 temp) I played Everything in its right place by radiohead and it wasnt even loud but the back window did indeed sound like it was going to fall out... I would appreciate the paperwork lee if you have any official lines on what they did - the thing is my garage are rubbish and they will claim they 'couldnt locate the fault' as they do every time! That sparrows playing kareoke actually made me laugh out loud...