I have macbook air with iSight camera. I use it to chat with my friend in London through skype for last three days and everything is fine. My friend is having windows 7. But today when we try to chat my macbook says that I do not have video camera. But I have built in iSight camera then why it is giving this message. I can hear and see his face but he was not able to hear or even see my face. I went to preferences my skype recognized the iSighgt camera but it is not working when I am trying to do chatting. So I check my camera by opening other application such as camera and camera is working fine in all other application. It is not working only in skype. can any one give me any suggestions to get rid of this problem. Thank you in advance.