Upgrading from 1.2.8 to 1.2.9

Hi everyone,
Sorry, didn't manage to find this in the docs.
Is there an optimal upgrade method? Or we need to re-upload *all* the files on the server? And what is the
procedure to upgrade the database?
Thanks!

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With best regards from Ukraine,
Andre
Skype: Francophile
Twitter: http://twitter.com/m_elensule
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Virtualization & Cloud Management Using Capacity Planning
Cloud computing makes use of virtualization - but cloud computing 
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