Problem upgrading an offline computer

[Colin Law]

On 10 February 2011 22:52, Ioannis Vranos <cppdeveloper at ontelecoms.gr> wrote:
> On Thu, 2011-02-10 at 18:49 -0300, Mariano Jara wrote:
>
>> OK then, I'll keep that in mind when time comes to proceed with
>> fresh-installing. Great tip! Thanks for your help Colin.
>>
>> Will the not-to-reformat-/ option leave the file system as it is now
>> (ext3) then? Should I upgrade it to ext4?
>
>
> Upgrade to ext4 definitely, in all circumstances. Back up and format.

Why?  I know there are some improvements but are they so important
that I should immediately reformat all my machines?  It seems to me
that is only necessary if there are security issues.

Colin