sorry, my mistake.
default=1 timeout=5 splashimage=(hd0,1)/boot/grub/splash.xpm.gz hiddenmenu title Fedora Core (2.6.10-1.760_FC3) root (hd0,1) kernel /boot/vmlinuz-2.6.10-1.760_FC3 ro root=LABEL=/1 rhgb quiet initrd /boot/initrd-2.6.10-1.760_FC3.img title Fedora Core (2.6.10-1.760_FC3smp) root (hd0,1) kernel /boot/vmlinuz-2.6.10-1.760_FC3smp ro root=LABEL=/1 rhgb quiet initrd /boot/initrd-2.6.10-1.760_FC3smp.img title Fedora Core (2.6.10-1.741_FC3smp) root (hd0,1) kernel /boot/vmlinuz-2.6.10-1.741_FC3smp ro root=LABEL=/1 rhgb quiet initrd /boot/initrd-2.6.10-1.741_FC3smp.img title Fedora Core (2.6.10-1.741_FC3) root (hd0,1) kernel /boot/vmlinuz-2.6.10-1.741_FC3 ro root=LABEL=/1 rhgb quiet initrd /boot/initrd-2.6.10-1.741_FC3.img title Fedora Core (2.6.9-1.667smp) root (hd0,1) kernel /boot/vmlinuz-2.6.9-1.667smp ro root=LABEL=/1 rhgb quiet initrd /boot/initrd-2.6.9-1.667smp.img title Fedora Core-up (2.6.9-1.667) root (hd0,1) kernel /boot/vmlinuz-2.6.9-1.667 ro root=LABEL=/1 rhgb quiet initrd /boot/initrd-2.6.9-1.667.img title Windows rootnoverify (hd0,0) chainloader +1
I've no idea what the problem is now but one thing you might try is changing the "root=LABEL=/1" entry for the troublesome kernel entries to "root=/dev/sda2" and see if that helps.
Paul.