laptop-mode-tools is deprecated and it should not be used anymore. It has been replaced by pm-utils (in fact in Maverick pm-utils conflicts with laptop-mode-tools and only one at the time can be installed).
I've updated Samsung Tools and now laptop-mode-tools support is gone: in its place Samsung Tools installs some pm hooks that take care of enabling usb autosuspend, sound card powersave, etc in an automatic way.
About the CPU undervolting, you need to use the modified kernel from my repository and install the package phc-intel (reboot to apply changes). Then in Samsung Tools the undervolt options will be enabled.
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