ok, so i have a C2D 17inch 2ghz iMac. my girlfriend has the lower end 17inch model, the C2D 1.83ghz one. we've been using the video chat function on ichat since being at university to keep in touch, and it has been most helpful! however recently, since the christmas period...it hasn't worked. every time one of us requests a video conversation we get "error-8" and it says one of us failed to respond...something like that. i thought it might be a problem my end - but i tried a video conversation with my dad (who has an imac G5) earlier and it worked just fine. i only seem to get the error when talking to her. anyone have any ideas as to whats going on, and how we could possibly resolve it? we both have installed the recent update that was released.