Reinstall // Upgrade

“You have the latest version of WordPress. You do not need to update. However, if you want to re-install version 3.0.1, you can do so automatically or download the package and re-install manually:”

I would reinstall just to try fixing something, but I won’t if I’ll have to export the xml file again, re-import, upload the themes, etc. Will I need to do it on reinstall ? Or even in case an upgrade is offered ? I’d go for the automatic process.