The "safe way" to install and migrate to Opera 9, or so I think.
Tuesday, 4. July 2006, 17:25:57
A painful and excruciating way of upgrading to a new version of Opera 
This goes into some detail and if followed you are assured of not losing any customizations. I doubt many people will take this route, but there is a lot of information here about where your Opera customizations live and how to migrate them to another installation.
Enjoy
This goes into some detail and if followed you are assured of not losing any customizations. I doubt many people will take this route, but there is a lot of information here about where your Opera customizations live and how to migrate them to another installation.
Enjoy
WIDGETIZE