When i video chat my friend on my imac (she has a macbook), the video will be fine for like a minute, but then it starts to get laggy and we have to keep re video chatting like every 2 minutes so it doesnt lag. She said im the only person it lags for and she the only person that it lags for me... I have snow leopard and i think she has leopard... But other kids i know that have leopard video chat me fine with no lag.... Any ideas? thanks!