You all know that I play with Linux a bit, but this is an excellent little trusim that the anti-Microsoft community tries to hide:

"'Enterprises now realize that they are writing to a distribution, not to Linux in general. What works on Red Hat Advanced Server will not work on SuSE Linux,' Schwartz [Sun's executive vice president of software] said. ... There is little doubt that the notion of 'Linux and free have gone away. Red Hat's pricing model now makes that clear,' he said."

- Sun Drops Its Linux Distribution, in eWeek, March 28, 2003 - By Peter Galli

Not free and not portable.