ii  linux-headers-3.8.0-6                       3.8.0-6.13                                 all          Header files related to Linux kernel version 3.8.0
ii  linux-headers-3.8.0-6-generic               3.8.0-6.13                                 amd64        Linux kernel headers for version 3.8.0 on 64 bit x86 SMP
ii  linux-headers-3.8.0-7                       3.8.0-7.15                                 all          Header files related to Linux kernel version 3.8.0
ii  linux-headers-3.8.0-7-generic               3.8.0-7.15                                 amd64        Linux kernel headers for version 3.8.0 on 64 bit x86 SMP
ii  linux-headers-generic                       3.8.0.7.21                                 amd64        Generic Linux kernel headers
ii  virtualbox                                  4.1.22-dfsg-0ubuntu2                       amd64        x86 virtualization solution - base binaries
ii  virtualbox-dkms                             4.1.22-dfsg-0ubuntu2                       all          x86 virtualization solution - kernel module sources for dkms
ii  virtualbox-qt                               4.1.22-dfsg-0ubuntu2                       amd64        x86 virtualization solution - Qt based user interface