In the 90s of the last century performance was key. Now the emphasis should be on reliability and security when it comes to operating systems. I took the excellent new paper by Andy Tanenbaum to update my lecture on trusted computing bases and host based security. Far from finished but at least now I know what to put there...

The language "E" and what it brings to distributed computing: capabilites, delayed remote call resolution and sturdy references. Finally understood why capabilities are so much better. Also talks a bit about SPKI: Certificates can do more than just bind a name to a key....

What are the reasons that large corporations to move their distributed applications back to the Z/OS mainframes? It's probably not only to run linux on those boxes.

David Gelernter on what is wrong with our current Operating System dinosaurs. Is a second coming of the computer really close? At least a lot of new and small devices has shown up lately - together with wireless connectivity this could be a first step to really ubiquitous computing. If only the operating systems would not treat us as morons...

Two of my students are organizing a trip to the IBM mainframe department near Stuttgart. Things we should ask the people there.

If operating systems are well understood and old stuff - then why do most OO-applications (running on some kind of virtual machine) perform like a dog? Or do our OO-weenies have trouble seeing the mallocs behind all the news?

Want to know how a CPU really works? Why hardware is more reliable than software? Simulate a CPU or a whole computer? Then the book by John Carpinelli is just for you.

Do we need a non-commercial alternative for Linux certification? Should we create a university based Linux certification label - open for everybody? Read why I think the current situation (LPI certification through commercial organizations) does not satisfy all needs)

	Note
	I am gathering input on this topic. Response from students was very good. Let me know if you think you can contribute some ideas for such a certificate.

Learn more about using Linux on mobile systems, for high-availability applications or for the building of secure systems. Meet Linux afficionados or simply interested users and discuss the future of this extremely successful project. And meet the new KDE4.0 desktop environment and celebrate with us its release at our release party (starting at 18.00 at our S-bar).

And use our blog at linux-day.de . You can find there also the map of the KDE release parties all over the world.