[    3.373598] input: Microsoft Natural® Ergonomic Keyboard 4000 as /devices/pci0000:00/0000:00:1d.0/usb2/2-1/2-1.1/2-1.1:1.0/input/input7
[    3.373847] microsoft 0003:045E:00DB.0003: input,hidraw2: USB HID v1.11 Keyboard [Microsoft Natural® Ergonomic Keyboard 4000] on usb-0000:00:1d.0-1.1/input0
[    3.375325] input: Microsoft Natural® Ergonomic Keyboard 4000 as /devices/pci0000:00/0000:00:1d.0/usb2/2-1/2-1.1/2-1.1:1.1/input/input8
[    3.375507] microsoft 0003:045E:00DB.0004: input,hidraw3: USB HID v1.11 Device [Microsoft Natural® Ergonomic Keyboard 4000] on usb-0000:00:1d.0-1.1/input1
[   39.726070] vboxdrv: module verification failed: signature and/or  required key missing - tainting kernel
[   39.729200] vboxdrv: Found 8 processor cores.
[   39.729812] vboxdrv: fAsync=0 offMin=0x203 offMax=0x14b6
[   39.729879] vboxdrv: TSC mode is 'synchronous', kernel timer mode is 'normal'.
[   39.729881] vboxdrv: Successfully loaded version 4.3.18_Ubuntu (interface 0x001a0008).
[   39.740776] vboxpci: IOMMU not found (not registered)
[   40.257464] usbd: disagrees about version of symbol module_layout
[   40.461090] e1000e: eth0 NIC Link is Up 100 Mbps Full Duplex, Flow Control: None
[   40.461094] e1000e 0000:00:19.0 eth0: 10/100 speed: disabling TSO
[   40.461127] IPv6: ADDRCONF(NETDEV_CHANGE): eth0: link becomes ready
[   41.371674] init: lightdm main process (2319) terminated with status 1
[   41.371684] init: lightdm main process ended, respawning
[   46.811037] systemd-logind[1707]: Failed to start unit user@112.service: Unknown unit: user@112.service
[   46.811043] systemd-logind[1707]: Failed to start user service: Unknown unit: user@112.service
[   46.813358] systemd-logind[1707]: New session c1 of user lightdm.
[   46.813372] systemd-logind[1707]: Linked /tmp/.X11-unix/X0 to /run/user/112/X11-display.
[   61.107332] systemd-logind[1707]: Failed to start unit user@1000.service: Unknown unit: user@1000.service
[   61.107338] systemd-logind[1707]: Failed to start user service: Unknown unit: user@1000.service
[   61.109386] systemd-logind[1707]: New session c2 of user mjs510.
[   61.109398] systemd-logind[1707]: Linked /tmp/.X11-unix/X0 to /run/user/1000/X11-display.
[   67.909945] audit_printk_skb: 54 callbacks suppressed
[   67.909948] type=1400 audit(1415707041.432:30): apparmor="STATUS" operation="profile_replace" profile="unconfined" name="/usr/lib/cups/backend/cups-pdf" pid=3671 comm="apparmor_parser"
[   67.909953] type=1400 audit(1415707041.432:31): apparmor="STATUS" operation="profile_replace" profile="unconfined" name="/usr/sbin/cupsd" pid=3671 comm="apparmor_parser"
[   67.930584] type=1400 audit(1415707041.456:32): apparmor="STATUS" operation="profile_replace" profile="unconfined" name="third_party" pid=3671 comm="apparmor_parser"
[  149.886689] nf_conntrack: automatic helper assignment is deprecated and it will be removed soon. Use the iptables CT target to attach helpers instead.