Please note: As you'll see from the logs, I tested this with a VirtualBox image, but the bug is occurs on actual hardware too. I have two T410 thinkpads with this configuration, both got a parallel installation (Natty beside already existing Maverick) by using cryptsetup and lvchange by hand before the partition manager started. In both cases the bootloader installation "failed" but worked after reboot.
Please note: As you'll see from the logs, I tested this with a VirtualBox image, but the bug is occurs on actual hardware too. I have two T410 thinkpads with this configuration, both got a parallel installation (Natty beside already existing Maverick) by using cryptsetup and lvchange by hand before the partition manager started. In both cases the bootloader installation "failed" but worked after reboot.