Setting up linux-image-3.2.0-24-generic (3.2.0-24.39) ...
Running depmod.
update-initramfs: deferring update (hook will be called later)
Examining /etc/kernel/postinst.d.
run-parts: executing /etc/kernel/postinst.d/dkms 3.2.0-24-generic /boot/vmlinuz-3.2.0-24-generic
run-parts: executing /etc/kernel/postinst.d/initramfs-tools 3.2.0-24-generic /boot/vmlinuz-3.2.0-24-generic
update-initramfs: Generating /boot/initrd.img-3.2.0-24-generic
Warning: No support for locale: en_US.utf8
run-parts: executing /etc/kernel/postinst.d/pm-utils 3.2.0-24-generic /boot/vmlinuz-3.2.0-24-generic
run-parts: executing /etc/kernel/postinst.d/update-notifier 3.2.0-24-generic /boot/vmlinuz-3.2.0-24-generic
run-parts: executing /etc/kernel/postinst.d/zz-update-grub 3.2.0-24-generic /boot/vmlinuz-3.2.0-24-generic
/usr/sbin/grub-mkconfig: 12: /etc/default/grub: quiet: not found
run-parts: /etc/kernel/postinst.d/zz-update-grub exited with return code 127
Failed to process /etc/kernel/postinst.d at /var/lib/dpkg/info/linux-image-3.2.0-24-generic.postinst line 1010.
dpkg: error processing linux-image-3.2.0-24-generic (--configure):
 subprocess installed post-installation script returned error exit status 2