This never happened before. I always dual boot Ubuntu and Fedora and use Grub from Ubuntu. I have just installed Ubuntu 12.04 amd_64.
Grub menu does not detect nor list Fedora installation. Fedora 17 grub is installed to its own / partition. Earlier, I had installed Fedora 17 and its Grub to the HD and then went on to install Ubuntu 12.04 and let the installation replace Fedora Grub... like I have been doing in the past.
Yet, Ubuntu Grub does not detect Fedora at all.
Any help is welcome.