[TYPO3-linux] Upgrading Linux running a typo3 4.5.26 LTS installation

[Jesper Grøndahl]

Hi typo3-linux list

At my work we have a typo3 4.5.26 (LTS) installation running on a Debian Lenny (5.0.10 - 32 bit) with
- php5 (5.2.6)
- mysql (5.0.51a)

We would like to move our site to a Debian Wheezy (7.1 - 64 bit) with
- php5 (5.4.4-14)
- mysql (5.5.31)

According to this page  http://typo3.org/download/  a typo3 4.5 LTS is only supported on php 5.2.x-5.3.x and mysql 5.0.x-5.1.x.

So the question is... is typo3 4.5.26 (LTS) just not supported on newer versions of PHP and MySQL or will it not work at all?

Also does anyone know if there is a problem going from a 32 bit Debian to a 64 bit if you keep the PHP and MySQL on the same versions as before?

Best regards,
    Jesper