Hi there .... for a new installation (no upgrade) with ISPConfig 2.2.5 on opensuse11.0 I have to downgrade the installed versions mysql 5.0.51a to mysql 4.x and php5.2.6 to php5.2.3 or older. On this new installed machine will be run an "Oxid Shop" see here for installation requirements (in german) My first idea is to remove (e.g. with yast) the mysql- and php-packages and install the recommended, older versions. Would that be the best and easiest way? Are there any problems to expect with this way? The ISPConfig-Configuration with webs, users etc. and the whole server are ready to run. To backup this data, I would create a mysql5-dump in mysql4-Format and reload it into the new system (if the package-remove and re-install would work). Always check software-requirements before you setup a new system What do you mean? Is there anybody who did this already? Thanks for hints!!!