This answer to this question is very long
Technical reasons. No doc pages, no man pages, some (very few, and not in the substance) changed config files, the install program just copies the whole live system to HD (instead of a clean installation of rpm's and many options the user has for the installation), all settings are the default MCNLive settings (the services, the disabled firewall etc) which are optimized for a live system.
Almost philosohical reasons. MCNLive is not a Linux distribution in its own. It is Mandriva, a specific version for specific needs.
I like to advise people who want the full-featured Linux experience a clean installation of the official MDV DVD. The installer is very powerful, feature-rich, with many choices a live system can't offer.
Security and quality assurance. When you install a professional and community controlled Linux distribution you can be sure that you get a secure and tested system and software. Copying a live cd (that is actually what a live cd install does) to your hard disk, you basically trust the maker of the live cd. Trust is ok, but the development model of Linux gives you a better quality assurance when you use a normal installation medium. Though, it depends a bit on which Live cd you install. For example Fedora Live, Mandriva One and Ubuntu are built on an official built system/server. So, they should be safe.
More here:
http://mandrivausers.org/index.php?s=&...st&p=315161http://www.mandrivaclub.nl/site/index.php?showtopic=8003The snappiness of MCNLive on your system is just a question of some settings, KDE and system services mostly. MCNLive has no special kernel nor optimized packages or such.
btw I don't mind people installing MCNLive. I just want them to be aware of the nature of a live system.
Does this answer your question?