I was poking around the bugzilla and found this:
so, you might try going back to kernel-188.8.131.52-64.fc14. e.g.
rpm -i kernel-184.108.40.206-45.fc14.x86_64.rpm --oldpackage
Note that you'll want to update /etc/yum.conf and either change installonly_limit to at least 5 (I'd go 10) or add a exclude=kernel line until they release a kernel that works to keep this (old) kernel from being removed from the system.
You'll also want to update /boot/grub/grub.conf to:
a) increase the timeout if you don't have one so you can select kernels at boot (10 is usually long enough)
b) set the default to point to the newly-installed old kernel (if it doesn't get set that way when installed... yum updates will change though... so...).
To keep yum from changing the kernel as it installs new ones, edit /etc/sysconfig/kernel and change UPDATEDEFAULT to 'no'.