Mostly you have a hard disk problem. Get a F8 DVD and boot to rescue mode. Enable network and backup as much data as you can. Use smartctl and see if your disk is fine. (smartctl -t long /dev/FailedDisk). Then, if things are fine, uninstall glibc and install it again.
(If I were you, I would have just backed up the data and reinstalled the server on a new hd)