Is innovation overrated? Both Windows and Mac OS X have found success by borrowing from each other and building on it -- a model not that dissimilar from Linux and the open source software movement.

OS Roundup: Red Hat last week released its eagerly awaited Red Hat Enterprise Virtualization Manager for Servers and the corresponding hypervisor. Exciting? Perhaps, but Red Hat users need not apply.

OS Roundup: Windows 7 has been out for barely two weeks, and its market share already rivals that of Mac OS X, despite years of marketing and strategizing on Apple's part. Does Windows stand a chance of being dethroned?

OS Roundup: Apple last Friday announced ZFS would not be making an appearance in Snow Leopard. An interesting choice, given that some believe when the Sun-Oracle deal closes, the new entity may have the two most powerful file systems around.

You have to love the irony — Apple's iPhone operating system has become the Windows of the mobile world, the clear choice for both developers and users of mobile apps.

OS Roundup: It's pretty much a given that just about any code written by humans is riddled with bugs. Isabelle is an app that aims to change this with tools that verify code using a logical calculus.

OS Roundup: Windows isn't the only OS to suffer from feature creep and the resulting bloat.

OS Roundup: Much hype is building around Google's OS for the always-connected user on the go. Google's misread of its target market's needs, however, will likely be a shortcoming too big to overcome.

OS Roundup: An irritating note-making C# application threatens Linux and brings the mighty Debian to its knees. Think it can't happen?

OS Roundup: The enterprise Linux heavyweight posted some great numbers this quarter, but is good news from Red Hat good news for Red Hat?

OS Roundup: Is Microsoft losing the war on two fronts? Enterprises continue to opt for XP over Vista and Windows 7, and Internet Explorer is now lame and leaking share.

OS Roundup: Happy birthday, Unix. There's much more to be said than 40 years old and not yet dead.

OS Roundup: From Java to Solaris, Sun brings myriad good technology to the table, technology that Oracle will likely exploit and monetize.

OS Roundup: No, not really, though Microsoft argues otherwise. But Linux, OS X and UNIX aren't all that secure either. Here's why.

OS Roundup: Eurocrats and the normally sober American Law Institute have some ideas about how operating system makers and other software developers should write their code. Will anyone listen?

OS Roundup: Is the key to desktop OS success tied to its server connection? That would explain Apple's and Window's success -- and Linux's many false starts.

OS Roundup: It's official: Oracle has Apple envy. And Cisco envy. And when it grows up, it wants to be just like IBM.

OS Roundup: Desktop Linux deployments now exceed 1 percent. With Windows 7 on the horizon, will it continue to expand, or will the OS hit the wall because it just isn't Windows?

OS Roundup: Moving on can be hard, whether in life or in the data center. To alleviate the latter, Microsoft typically offers backward compatibility. With Windows 7, it goes one further with XP mode.

Are you merely a fan, or have you moved into a whole other realm?

OS Roundup: What's in it for Oracle that wasn't there for IBM? Lots -- if you look closely.

OS Roundup: HP is selling the new version of HP-UX as the antidote to your IT headaches. But looking at the bigger picture, is Unix really a vaccine in the face of Linux?

OS Roundup: Because all roads lead to the cloud, and the cloud leads to services.

OS Roundup: Lean times for Unix likely mean good things for Linux.

OS Roundup: Would the world be a better place without it? That may sound a touch brutal, but it's a question that must be asked. Here's why.