While we labor and wring hands over the success (or lack there of ) for Linux on the Desktop – lo and behold Linux has gained not just a beachead but large chunks of application share on IBM z-Series mainframes. Just take a look at the article here. IBM has seen more than half of the new and updated program for the z_Series coming from Linux vendors this past year and more than 40% mainframe users employ Linux apps. That will make IBM competing again in the mainframe market with the likes of Dell, Fujitsu, HP and Oracle … uh Sun. And to think, IBM could have had the Sun on its side.