Solaris kernel developer , Eric Schrock, writes about Open Solaris and on why merging Solaris into Linux is a just an all round bad idea, and that creating a Sun fork of the Linux kernel tree would be an even worse idea. He reiterates his point that just throwing source code over the wall won't be enough. Creating an active community around OpenSolaris will not be easy. It's one heck of a read , from someone who is literally at the coalface of Solaris development.