Abbie Schubert paid more than $1,100 for a Dell laptop hoping to enroll in online classes at Madison Area Technical College, or MATC. But something stopped her: she bought an operating system for her computer she never heard of, Ubuntu. That's an operating system for your computer similar to Windows that contains Linux. It's highly regarded among some people and extremely popular with certain circles of computer users because it's free. Schubert says she ordered her laptop online at Dell.com expecting to buy your classic bread-and-butter computer. She didn't realize until the next morning her laptop defaulted to the Ubuntu operating system."It's been a mess," she said. "I regret ordering the computer." Schubert says she never heard of Ubuntu until learning that she accidentally bought it. She called Dell the very next day and says the representative told her there was still time to change back to Windows. But she says Dell discouraged her!