Unlike Windows from Microsoft and OS X from Apple, Linux is not owned, updated or controlled by a single company. Thousands of developers around the world work on Linux, making improvements and issuing new versions several times a year. Because the core Linux software is open source, these developers have the right — some would say responsibility — to borrow from one another's work, constantly looking for enhancements.

The Ubuntu version of Linux runs the Dell computers. Because Dell does not have to pay a licensing fee for the operating system, the computers are $80 cheaper than PCs with Windows Vista Home Premium or $50 cheaper than the stripped-down Vista Basic edition.

Linus Torvalds, the creator of Linux, acknowledged that "there are a few dark spots but they really tend to be fairly rare, and in practice quite often the biggest hurdle is simply that Linux mostly doesn't come preinstalled and set up for you." He also says that the easiest way to get Linux is to buy the DVD (or CD) from one of the most common sources. One way to ease the transition to Linux is to buy a support contract. For $50 you can download Novell's version of Suse Linux with a year of support. For $35 more you get a CD.