Which is the fastest linux?

[MobiNuX]

Ubuntu is a Debian-derived computer operating system based on GNU/Linux. Ubuntu's goals include providing an up-to-date, stable operating system for the average user, with a strong focus on usability and ease-of-installation. Ubuntu has been selected by readers of desktoplinux.com as the most popular Linux distribution for the desktop, claiming approximately 30% of their desktop installations in both 2006 and 2007. Ubuntu 9.04 is the latest stable version and Ubuntu 9.10 alpha is out.

Fedora is a RPM-based, general purpose operating system built on top of the Linux kernel, developed by the community-supported Fedora Project and sponsored by Red Hat. Fedora's mission statement is: "Fedora is about the rapid progress of Free and Open Source software." The latest is Fedora 11

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Debian is a computer operating system composed of free and open source software and proprietary software. The primary form, Debian GNU/Linux, is a popular and influential Linux distribution. It is distributed with access to repositories containing thousands of software packages ready for installation and use. These packages are distributed under free software / open source licenses. Debian is known for strict adherence to the Unix and free software philosophies as well as using collaborative software development and testing processes. Debian can be used as a desktop as well as server operating system.
The Debian Project is governed by the Debian Constitution and the Social Contract which set out the governance structure of the project as well as explicitly stating that the goal of the project is the development of a free operating system. Debian is developed by over one thousand volunteers from around the world and supported by donations through SPI, a non-profit umbrella organization for various free software projects.

OpenSUSE, is a general purpose operating system built on top of the Linux kernel, developed by the community-supported openSUSE Project and sponsored by Novell. After acquiring SUSE Linux in January 2004, Novell decided to release the SUSE Linux Professional product as a 100% open source project, involving the community in the development process.
The initial release of the community project was a beta version of SUSE Linux 10.0 on December 2008. The latest current stable release is openSUSE 11.1

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Linux Mint is an operating system for personal computers. While Mint is mostly based on (and compatible with) Ubuntu, the design of the user interface differs. Design differences include:
A distinct user interface, including a simplified bootloader, desktop layout, theme, and the custom Mint menu.
A strong focus on full functionality out of the box (E.g.: Wireless drivers included, plugins required to play common media formats installed by default, screen resolution automatically set, etc.). Linux Mint 6 also includes or features a free Flash player so users can view sites such as YouTube without having to install anything else.
The Mint Tools, a collection of system tools designed to make system management and administration easier for end users. Latest version is Linux Mint 7

PCLinuxOS, often abbreviated as PCLOS, is a desktop operating system. It is a free operating system for personal computers aimed at ease of use. he precursor to PCLinuxOS was a set of RPM packages created to improve successive versions of Mandrake Linux (now Mandriva Linux). These packages were created by Bill Reynolds, a packager better known as Texstar. From the year 2000 to 2003, Texstar maintained his repository of RPM packages in parallel with the PCLinuxOnline Web site. In an interview, Reynolds said he started PCLinuxOS "to provide an outlet for crazy desire to package source code without having to deal with egos, arrogance and politics."
The latest version is PCLinuxOS 2009.1

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Mandriva is a publicly traded Linux and open source software company with its headquarters in Paris, France and development center in Curitiba, Brazil. Mandriva, S.A. is the creator and maintainer of Mandriva Linux, describing itself as a "project initiator and a skills organizer in the Open Source arena", and a founding member of the Desktop Linux Consortium.
Mandriva, S.A. began as MandrakeSoft in 1998. It currently has about 130 employees (80 of whom are engineers) and has offices in France, the USA, and Brazil. The company sells its products in more than 140 countries and estimates the number of Mandriva Linux users to be in the 6-to-8 million range.
The Latest version is Mandriva 2009.1

[elexandru]

Super fast Ext4 filesystem arrives in Ubuntu 9.04
Ext4, the next generation of Linux's Ext3 filesystem, is now available in the latest Ubuntu 9.04 installer images. Ext4 was officially declared stable in version 2.6.28 of the Linux kernel, which was released last month. Ext4 is designed to provide better performance and increase reliability. It also increases the maximum filesystem size to one exabyte and reduces the amount of time that is required to perform a fsck operation.