Just upgraded my x86_64 (Intel) machine to F14. Network now fails to come up on boot. I see "Bringing up loopback interface", then it hangs for a while, then I see "LSB: Bring up/down networking failed". I have to restart the network (then all the services that are picky about it being up when they start, e.g., named, dhcpd, iptables) after the machine finishes booting.
*** This bug has been marked as a duplicate of bug 630225 ***