ii  linux-headers-3.11.0-15                     3.11.0-15.25~precise1                 Header files related to Linux kernel version 3.11.0
ii  linux-headers-3.11.0-15-generic             3.11.0-15.25~precise1                 Linux kernel headers for version 3.11.0 on 64 bit x86 SMP
ii  linux-headers-3.11.0-26                     3.11.0-26.45~precise1                 Header files related to Linux kernel version 3.11.0
ii  linux-headers-3.11.0-26-generic             3.11.0-26.45~precise1                 Linux kernel headers for version 3.11.0 on 64 bit x86 SMP
ii  linux-headers-3.13.0-39                     3.13.0-39.66~precise1                 Header files related to Linux kernel version 3.13.0
ii  linux-headers-3.13.0-39-generic             3.13.0-39.66~precise1                 Linux kernel headers for version 3.13.0 on 64 bit x86 SMP
ii  linux-headers-generic-lts-saucy             3.11.0.26.23                          Generic Linux kernel headers
ii  linux-headers-generic-lts-trusty            3.13.0.39.34                          Generic Linux kernel headers
ii  virtualbox                                  4.1.12-dfsg-2ubuntu0.6                x86 virtualization solution - base binaries
ii  virtualbox-dkms                             4.1.12-dfsg-2ubuntu0.6                x86 virtualization solution - kernel module sources for dkms
ii  virtualbox-qt                               4.1.12-dfsg-2ubuntu0.6                x86 virtualization solution - Qt based user interface