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This question already has an answer here:

I am running xubuntu 12.04 LTS :

cat /etc/issue
Ubuntu 12.04.2 LTS \n \l

When I do

uname -a

I have :

Linux tolede 3.2.0-32-generic #51-Ubuntu SMP Wed Sep 26 21:33:09 UTC 2012 x86_64 x86_64 x86_64 GNU/Linux

According to the release notes, it should be :

I did the automatic update a few days ago.

Why am I not running the lastest version?

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marked as duplicate by Kevin Bowen, poolie, gertvdijk, Eric Carvalho, user68186 Jun 18 '13 at 15:45

This question has been asked before and already has an answer. If those answers do not fully address your question, please ask a new question.

I intent to delete this question and ask another one. – Guillaume Coté Jun 18 '13 at 17:08

Automatic updates to 12.04.2 won't upgrade to the 3.5.x kernel.

As it says in the article you linked:

For more information regarding the 12.04.2 LTS Hardware Enablement Stack, please refer to:

In that article, we can see:

... Only those installing from the 12.04.2 media will automatically receive a newer hardware enablement stack by default...

Anyone wishing to opt into the hardware enablement stack for Precise may do so by running following command which will install the linux-generic-lts-quantal and xserver-xorg-lts-quantal packages:

sudo apt-get install linux-generic-lts-quantal xserver-xorg-lts-quantal 
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