I updated my Toshiba Satellite laptop 686 Hypertheaded 32bit F8 tonight. One of the hal updates (hal-info-20080607-2.fc8.noarch.rpm), when updated disabled my ethernet, wireless, usb ports and power handler. I had seen this bug last July, and thought by now it would have been fixed. It is not. I had to force install the old hal-info-20071030-1.fc8 version to get the hal run hardware back working.
Yet the update worked fine on the hp 64 bit amd laptop.
Perhaps it would be wise to have the old hal-info rpm on your harddrive before you update. It is very hard to import when the i/o hardware is not working.