Intel iMac Core Duo: iSight/iChatAV 3 Focus Problems

My dad and I have matching Intel iMac's with same RAM etc. What I am finding with iChatAV in a 1-on-1 video chat is that in the little window that shows me what I look like, my video looks awesome, yet my dad's video looks quite out of focus. He experiences the same thing on his end. He looks fine, and I am out of focus. We are both trying iGlasses as well because the iSight is just too dang dark on its own.
Now when I had my PowerBook G4, Panther, and an external iSight whenever I chatted with buddies both my video and theirs looked AWESOME. Almost like watching HDTV.
This is very strange. I am wondering if anyone else is experiencing this in iChat under the new Intel iMac's, as this is VERY unacceptable quality. I'm sure it cannot be a bandwidth issue as we both have 7Mbps downstream and 1Mbps upstream. And the quality I saw on the Keynote was much better than this.
Anyone else used both cameras and is finding this with the new Intel's?

Thank you, I had looked there and musta missed the 480Mb/s rating. So yes that is USB 2.0.
There is a article at CNet comparing the two cameras:
"In summary:
1) The external isight camera is very good (Firewire, F2.8 glass lens, auto-focus, CCD, 30 fps).
2) The internal isight is quite poor in comparison (USB, plastic lens, fixed-focus, CMOS sensor)."
I tried a few chats with other people using new iMac's today, with the same poor results. It is an inferior camera, hands down.

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