if you still have the 2 year old install dvd boot with that
or install fedora 10 ,fedora 11 will be out in a few weeks.
you can also use "systenRescue cd "
http://www.sysresccd.org/Main_Page
to remove the current BAD ( many people are having trouble with it NOT WORKING ) and install the old one ( should still be installed if you boot from the old kernel and boot
durring the 3 sec. countdown hit the space bar then the down arow to select the old one .then "enter" to boot.