[khedoros1]

> Anyway, this is is just 1 contrived example of something modern OSs do, and that OSs from the 90's didn't do.

This doesn't add anything, because contrived or not, it doesn't answer the question that was posed: "What does modern Linux do that Solaris from the 90's did not, that it requires 50x more memory?"

It hits the first part of the question, but not the second part. We could add wifi to a 90s OS without severely inflating the memory requirements. My Nintendo DS (with 4MB RAM) "seamlessly connects and disconnects to wireless networks", after all.

You could easily answer the question with a sensible, non-contrived answer, and I'm not sure why you didn't.