I was just checking out OpenSolaris RC2 from the Live CD and noticed it is making some remarkable progress. All my hardware worked with the exception of my modem. The modem is no big deal because I have never used it anyways. The software packages are up to date and the Sun specific tools seem to be working well. The package manager is very strait forward and professional. The appearance, themes , wallpapers, gdm, etc are nice and everything looked polished.
One thing that bothers me is there is no shutdown or restart buttons. I will have to investigate this further. Also, the scroll wheel for the mouse does not work even though the mouse is detected properly. The hardware information provided by the system is very good, my hardware specs were right on the money! Memory use is a little high but I found a few things that could be tweaked to improve this.
For as young a system as OpenSolaris is there seems to be some real strong development going on. I will definitely be keeping my eye on OpenSolaris! If you haven't checked out OpenSolaris it is worth the time to have a look!