I am running WordPress 2.0.2 (that's what it says at the bottom of the page) and was thinking of upgrading to the latest version. I find upgrades like this rather worrying in case something goes wrong so I though I'd found the ideal solution. I would upload a new copy then update the wp-config.php file to point to my current database and see if it all works. I went through a similar exercise when upgrading my forum although that doesn't use a database.
Then it occurred to me that the update may change the MySQL database structure which would mean I couldn't go back to the old version. Is that the case?
I also have a theme called 'Blue Horizon' installed which I want to keep. Does anyone know if that will work with the new version of WordPress.