ii  linux-headers-3.5.0-23                       3.5.0-23.35~precise1                                 Header files related to Linux kernel version 3.5.0
ii  linux-headers-3.5.0-23-generic               3.5.0-23.35~precise1                                 Linux kernel headers for version 3.5.0 on 64 bit x86 SMP
iU  linux-headers-3.5.0-27                       3.5.0-27.46~precise1                                 Header files related to Linux kernel version 3.5.0
iU  linux-headers-3.5.0-27-generic               3.5.0-27.46~precise1                                 Linux kernel headers for version 3.5.0 on 64 bit x86 SMP
iU  linux-headers-generic-lts-quantal            3.5.0.27.34                                          Generic Linux kernel headers
ii  virtualbox-guest-dkms                        4.1.12-dfsg-2ubuntu0.2                               x86 virtualization solution - guest addition module source for dkms
ii  virtualbox-guest-utils                       4.1.12-dfsg-2ubuntu0.2                               x86 virtualization solution - non-X11 guest utilities