Почему мое ядро не является последним для 14,04?

Мое ядро в настоящее время

Linux scv 3.13.0-34-generic #60-Ubuntu SMP Wed Aug 13 15:45:27 UTC 2014 x86_64 x86_64 x86_64 GNU/Linux

Но я знаю, что это должно быть

3.13.0-45-generic #74

Почему это не обновляется по умолчанию на моем ПК после выполнения

sudo apt-get update && sudo apt-get upgrade && sudo apt-get dist-upgrade 

? Какая-либо идея? Как я могу зафиксировать это?

Удачи!

Править: выполнение

ema@scv:~$ cat /etc/issue
Ubuntu 14.04.2 LTS \n \l

отчеты 14.04.2, по-видимому...

Edit2: на моем другом компьютере, с более новой установкой Ubuntu 14.04, я получил 3.13.0-45-универсальный № 74...

Edit3: весь repos/ppa

ema@scv:~$ grep -h ^deb /etc/apt/sources.list /etc/apt/sources.list.d/*
deb http://gb.archive.ubuntu.com/ubuntu/ trusty main restricted
deb-src http://gb.archive.ubuntu.com/ubuntu/ trusty main restricted
deb http://gb.archive.ubuntu.com/ubuntu/ trusty-updates main restricted
deb-src http://gb.archive.ubuntu.com/ubuntu/ trusty-updates main restricted
deb http://gb.archive.ubuntu.com/ubuntu/ trusty universe
deb-src http://gb.archive.ubuntu.com/ubuntu/ trusty universe
deb http://gb.archive.ubuntu.com/ubuntu/ trusty-updates universe
deb-src http://gb.archive.ubuntu.com/ubuntu/ trusty-updates universe
deb http://gb.archive.ubuntu.com/ubuntu/ trusty multiverse
deb-src http://gb.archive.ubuntu.com/ubuntu/ trusty multiverse
deb http://gb.archive.ubuntu.com/ubuntu/ trusty-updates multiverse
deb-src http://gb.archive.ubuntu.com/ubuntu/ trusty-updates multiverse
deb http://gb.archive.ubuntu.com/ubuntu/ trusty-backports main restricted universe multiverse
deb-src http://gb.archive.ubuntu.com/ubuntu/ trusty-backports main restricted universe multiverse
deb http://security.ubuntu.com/ubuntu trusty-security main restricted
deb-src http://security.ubuntu.com/ubuntu trusty-security main restricted
deb http://security.ubuntu.com/ubuntu trusty-security universe
deb-src http://security.ubuntu.com/ubuntu trusty-security universe
deb http://security.ubuntu.com/ubuntu trusty-security multiverse
deb-src http://security.ubuntu.com/ubuntu trusty-security multiverse
deb http://archive.canonical.com/ubuntu trusty partner
deb-src http://archive.canonical.com/ubuntu trusty partner
deb http://extras.ubuntu.com/ubuntu trusty main
deb-src http://extras.ubuntu.com/ubuntu trusty main
deb http://ppa.launchpad.net/maarten-baert/simplescreenrecorder/ubuntu trusty main
deb http://ppa.launchpad.net/maarten-baert/simplescreenrecorder/ubuntu trusty main
deb http://ppa.launchpad.net/osmoma/audio-recorder/ubuntu trusty main
deb http://ppa.launchpad.net/osmoma/audio-recorder/ubuntu trusty main
deb http://ppa.launchpad.net/pipelight/stable/ubuntu trusty main
deb http://ppa.launchpad.net/stebbins/handbrake-snapshots/ubuntu trusty main
deb http://ppa.launchpad.net/stebbins/handbrake-snapshots/ubuntu trusty main
deb http://ppa.launchpad.net/stefansundin/truecrypt/ubuntu trusty main
deb http://ppa.launchpad.net/stefansundin/truecrypt/ubuntu trusty main
deb http://ppa.launchpad.net/sunab/kdenlive-release/ubuntu trusty main
deb http://ppa.launchpad.net/sunab/kdenlive-release/ubuntu trusty main
deb http://ppa.launchpad.net/ubuntu-wine/ppa/ubuntu trusty main
deb http://ppa.launchpad.net/ubuntu-wine/ppa/ubuntu trusty main
deb http://ppa.launchpad.net/xorg-edgers/ppa/ubuntu trusty main
deb http://ppa.launchpad.net/xorg-edgers/ppa/ubuntu trusty main