Fedora 12 32bit version, after updated by yum for all, when rebooted to GRUB menu, selected the new kernel 2.6.31.12-174.2.22.fc12.i686.PAE, won't boot, reboot system back to grub menu and chose previous kernel 2.6.31.12-174.2.3.fc12.i686.PAE to start f12, still works, is there any fix available or have to wait for f13