Well... once i have faced the same problem as the webcam will give this note to others (persons webcam is not available) and to u ( webcam is not connected) and as i was in a net caffe i ordered a new webcam and it says the same although i have reinstalled the webcam softwear and so i have changed the computer and it also gave me the same problem, i got out of yahoo and went to check it on lifemsngr and here u go the same problem , i changed it to skype and oovoo but it worked and also when trying to take snapshots and so on it worked so after all this story it seems that sometimes yahoo do have a problem due to a busy server..... try it on oovoo or skype and tell the the results. but in mind that it might work other time without any complications.....