jeremie@jeremie-VirtualBox:~$ sudo apt-get install kubuntu-desktop
Reading package lists... Done
Building dependency tree
Reading state information... Done
kubuntu-desktop is already the newest version (1.344).
The following package was automatically installed and is no longer required:
  kde-l10n-engb
Use 'sudo apt autoremove' to remove it.
0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded.
4 not fully installed or removed.
After this operation, 0 B of additional disk space will be used.
Do you want to continue? [Y/n] y
Setting up linux-image-4.8.0-26-generic (4.8.0-26.28) ...
Running depmod.
update-initramfs: deferring update (hook will be called later)
initrd.img(/boot/initrd.img-4.8.0-26-generic
) points to /boot/initrd.img-4.8.0-26-generic
 (/boot/initrd.img-4.8.0-26-generic) -- doing nothing at /var/lib/dpkg/info/linux-image-4.8.0-26-generic.postinst line 491.
vmlinuz(/boot/vmlinuz-4.8.0-26-generic
) points to /boot/vmlinuz-4.8.0-26-generic
 (/boot/vmlinuz-4.8.0-26-generic) -- doing nothing at /var/lib/dpkg/info/linux-image-4.8.0-26-generic.postinst line 491.
Examining /etc/kernel/postinst.d.
run-parts: executing /etc/kernel/postinst.d/apt-auto-removal 4.8.0-26-generic /boot/vmlinuz-4.8.0-26-generic
run-parts: executing /etc/kernel/postinst.d/dkms 4.8.0-26-generic /boot/vmlinuz-4.8.0-26-generic
run-parts: executing /etc/kernel/postinst.d/initramfs-tools 4.8.0-26-generic /boot/vmlinuz-4.8.0-26-generic
update-initramfs: Generating /boot/initrd.img-4.8.0-26-generic
run-parts: executing /etc/kernel/postinst.d/pm-utils 4.8.0-26-generic /boot/vmlinuz-4.8.0-26-generic
run-parts: executing /etc/kernel/postinst.d/unattended-upgrades 4.8.0-26-generic /boot/vmlinuz-4.8.0-26-generic
run-parts: executing /etc/kernel/postinst.d/update-notifier 4.8.0-26-generic /boot/vmlinuz-4.8.0-26-generic
run-parts: executing /etc/kernel/postinst.d/vboxadd 4.8.0-26-generic /boot/vmlinuz-4.8.0-26-generic
run-parts: failed to exec /etc/kernel/postinst.d/vboxadd: Exec format error
run-parts: /etc/kernel/postinst.d/vboxadd exited with return code 1
Failed to process /etc/kernel/postinst.d at /var/lib/dpkg/info/linux-image-4.8.0-26-generic.postinst line 1052.
dpkg: error processing package linux-image-4.8.0-26-generic (--configure):
 subprocess installed post-installation script returned error exit status 2
dpkg: dependency problems prevent configuration of linux-image-generic:
 linux-image-generic depends on linux-image-4.8.0-26-generic; however:
  Package linux-image-4.8.0-26-generic is not configured yet.

dpkg: error processing package linux-image-generic (--configure):
 dependency problems - leaving unconfigured
dpkg: dependency problems prevent configuration of linux-image-extra-4.8.0-26-generic:
 linux-image-extra-4.8.0-26-generic depends on linux-image-4.8.0-26-generic; however:
  Package linux-image-4.8.0-26-generic is not configured yet.

dpkg: error processing package linux-image-extra-4.8.0-26-generic (--configure):
 dependency problems - leaving unconfigured
dpkg: dependency problems prevent configuration of linux-generic:
 linux-generic depends on linux-image-generic (= 4.8.0.26.35); however:
  Package linux-image-generic is not confiNo apport report written because the error message indicates its a followup error from a previous failure.
                                                                    No apport report written because the error message indicates its a followup error from a previous failure.
              No apport report written because MaxReports is reached already
                                                                            gured yet.

dpkg: error processing package linux-generic (--configure):
 dependency problems - leaving unconfigured
Errors were encountered while processing:
 linux-image-4.8.0-26-generic
 linux-image-generic
 linux-image-extra-4.8.0-26-generic
 linux-generic
E: Sub-process /usr/bin/dpkg returned an error code (1)