Strange. On my Redhat system the locales are part of the standard rpm glibc-common-2.2.5-40 ... so I don't understand why your system doesn't have them. Maybe you can reinstall that rpm from CD-ROM.
As for the quiz thing, you HAVE to use the 'save grades' button with Moodle 1.0.8.1 when creating a quiz. Fixed in 1.0.9.
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