I learned many interesting things from Sergey Pikalev's talk about Solaris, but I dislike the style of the talk. Instead of presenting slides, Sergey made all the examples in real-time in the terminal. Obviously, this caused inevitable delays and tired the public.
As far as I know, Python seminar Exception #08 will be held in similar fashion in a few days. Looking forward to hear their impressions about this form of presentation.
Returning to Solaris: its service manager reminded is similar to NixOS idea of building the whole system configuration from the nix expressions (except nix expressions are much more powerful then Solaris' XML, and also much more human-friendly).
Sergey also talked about zones and ZFS, but didn't cover dtrace.
The next talk was about NetBeans and using Java in corporate environment. I got an impression of Java being bureaucratic programming platform and left the seminar.