Linux fans love to debate the pros and cons of myriad technologies, but none more than operating systems -- and you can bet the usual winner isn't based in Redmond or Cupertino. This week the question was raised once again on Slashdot, spurred by a Linux Magazine comparison of Ubuntu Gutsy Gibbon and Mac OS X Leopard and drawing well nigh 600 comments by Friday. Which operating system is King of the Jungle is a question that no doubt will continue to be debated as long as a jungle exists, but that doesn't mean the debates can't get heated now, too.