O.K I just jailbroke my 4S and I'm very happy. I grabbed Hands Free Control from Cydia and it's o.k but every time I open SIRI, it stars off with YES and for some reason I don't like that. So I uninstalled the app but it still starts off with YES. I went into settings and turned off Siri, rebooted and turned SIRI back on but it still say YES when it first opens. Can someone HELP ME!!!!!!
This is an option in Hands-Free Control. Install it again and turn OFF "voice response". This is one of the features of the app. If you want Siri to respond to you with "Yes" you turn "voice response" ON. Check out handsfreecontrol (dot) com for more info.