Running Apache, MySQL, PHP with Moodle 1.9.9 running as a school based CMS. All possible updates for 8.04 have been applied. Moodle 2.x from Versions 2.1 onwards needs Php version 5.3.2 which is included in more recent distribution version. Would I be better (safer) upgrading php & mysql or upgrading Ubuntu to a more recent version? - if upgrading Ubuntu is better, are there any caveats i should know before attempting this. I will be taking a Copy of the entire server before doing any upgrading. Hoping to run on a test version also. Bit green on Linux hence lack of confidence.