Hm. Actually, it looks like mine are still on the default "no" and "30". But the first says " in footer of site " when it really means "in footer of classifieds" (?). And the second has the exact same text with no explanation for the "30".
Maybe you accidentally dropped a Documentation/1stTimeSetup.txt from the releases? If not, it would be a good idea to revise the upgrade.txt instructions to include something about this most important feature.