Downsides

I've been using Linux for about ten years, and OpenSolaris for about a week or so now. They are very similar in some aspects, and very different in others. Package management in both is rather sophisticated. OpenSolaris sure has funny names for some of its packages though. I can't get the version of VIM i'm used to run, which is really really frustrating as the old one has issues with when you can navigate around using the arrow keys and such. But overall, I've been really impressed and enjoyed it. I miss Linux sometimes, but not enough to switch. I still have my command line control, easy to use services, and a rather stable (I hope) system.