I did that, Stilly, and the answers I found were linked in my first post on this subject. I was intrigued by what I found and wanted to know what extra information Donuel had found to conclude that the problem had been solved. I think you are right to surmise that there is none. I am disappointed but glad I fact checked. I am no wiser as to the cause of coronal heating but now know much more about Donuel's "facts". You win some, you lose some :-)