Linux fans felt as though Wal-Mart’s decision to retail inexpensive computers that use Linux for their operating system meant that the free, open source software would finally break out into general public. Oh yeah, and Ron Paul’s going to be President. “This really wasn’t what our customers were looking for,” said Wal-Mart Stores Inc. spokeswoman Melissa O’Brien.To test demand for systems with the open-source operating system, Wal-Mart stocked the $199 “Green gPC,” made by Everex of Taiwan, in about 600