I just did a fresh install of Kubuntu 64 bit 12.04 (from the DVD) to a Lenovo V570 laptop.
I did a dual boot install with Windows 7. I used the boot layout leftover from Linux Mint 12 (which was working).
The installation finished with what seemed to be a success.
However, when rebooting, I get this error: GRUB: “invalid arch independent ELF magic” after install on SSD
Then I did grub-install and update-grub (I didn't install grub-efi, so maybe this is the problem?)
Then I got "unknown filesystem error" at the grub prompt.
Desperately, I gave /boot the bootable flag. Then on a reboot,... I got some strange screen with the letters PXE. It flashed momentarily, too fast to read, and then the computer jumped to a screen which asked me from which drive was the boot desired to be.
As of now, I have no idea what I am doing.