I had the same problem on Edgy freshly updated from Dapper. Booting from the i386 kernel and running "sudo update-initramfs -u -k 2.6.17-10-generic" solve it.
-- "-generic" kernel doesn't boot after upgrade to Edgy prerelease (but -386 does) https://launchpad.net/bugs/67256 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
