[Koha] Upgrade from 2.2.5 to 2.2.8

Hi all, We are looking to upgrade our installation of Koha (http://library.afbrisbane.com) from 2.2.5 to 2.2.8, mainly for the different Z39.50 process that came in version 2.2.7. I was wondering if I should expect any problems (apart from what is in the release notes - yes I have read them :) ) or if anyone here had had any problems upgrading from some older version to 2.2.8? Just trying to collect as much information as I can before going ahead with the upgrade. Thanks, Greg