Ubuntu's CEO, Mark Shuttleworth fired one over Microsoft's bow with a statement that the soon to be released Ubuntu 9.10 is ready to go head-to-head with Windows 7 on Netbooks. He also said that Windows XP is still hanging around on some Netbooks as a "ghost." Shuttleworth wants another shot at the U.S. market with his new Ubuntu 9.10 and Ubuntu One offering. Ubuntu One is a file backup and sharing service where registered users receive 2GB of free storage and 50GB of storage for $10 per month.