Keep in mind, by the way, that there have been some problems reported by people who restored their settings from a backup that were not experienced by those who left their new firmware fresh (not restored). The backup/restore software works great when you're using it with the same firmware version, but there are known problems when upgrading. And, it doesn't back up your 3rd party applications (though it does save your repository list).

If you can tolerate it, it may be best to just transfer your documents and such (all the files you can see through the file manager) to an SD/MMC card and not restore your settings using the built-in backup/restore program after upgrading.

Of course, it doesn't hurt to make a backup anyway, since then you have the option available.