Thanks! I'm a little scared that things haven't change a lot
Nowadays, the only places where OS research seems to be alive is in cloud, embedded and real time OSs.
See the 10th question.
I would like to hear what exactly was done better in Plan 9 in regards to IPC. If I recall correctly Plan 9 is open source now - is there more development going on now or is it stalled?
http://herpolhode.com/rob/utah2000.pdf
There's some pretty brutal truths here.