ARGH webcam troubles

[HayabusaFIL]

I am at my in-laws setting up a logitech webcam. When I connect to someone else (they use yahoo messinger), they see us ok, but the image of them is upside down. If they flip the image so they are good to me, they see themselves as upside down. I am told this problem did not exist before the installation of a cable modem yesterday, so I have no idea whats happening. Any help appreciated.