After 2 months I’m still waiting for my Solaris DVD. 
For a limited time only, just like Ubuntu’s ShipIt service, Sun Microsystems lets you order Solaris 10 absolutely free of charge. The operating system comes on a single DVD supporting both the x86 and SPARC versions. Also included is Sun Studio 11.
Solaris is heavily used in technical and science areas. It is still OS of choice for such tasks as EDA, CAD, CAM, CAE. It is also used as server OS for large databases, file and computation server or websites in mixed environments.
The kernel of Solaris is BSD UNIX with some heritage from System V (according to the www.levenez.com/unix/ ). The kernel is very scalable (largest server offered by Sun contains 72 CPUs), secure (merged with parts of Trusted Solaris), reliable (Solaris Fault and Service Managers, Self-Healing technologies). Technologies like Containers for virtualization, DTrace for debugging and performance optimization, ZFS as high-end file system are still not available on other systems (or have been ported from Solaris). Performance-wise Solaris gets very good notes from several benchmarks.
http://www2.sun.de/dc/forms/reg_us_2211_391.jsp
