If the built-in iSight is indeed on the USB2 bus, that adds further weight to the rumours that the new laptops will drop FW400 and only have a single FW800 port. (and the new iSight will be USB.. )
Shucks.
I use FW *all* the time with my PB. - I plug in my isight, my external HD, and my camcorder into the FW port.
It's not the end of the world, just means buying 50 quids worth of changeover cables - Apple had better sell them cheap you hear me!
.. RedTomato..