Well, 12 nights in... and I finally managed to jinx the numbers..
Pugsy's suggested I power-cycle the machine again in case it's a firmware glitch, and I finally remembered to do it. Last night I managed to achieve two whole hypopneas for an AHI of 0.27. I doubt the reset really had anything to do with this - meaning my previous 11-nights-in-a-row 0.0's were quite likely real! (Hey Taringa, it looks like I matched your record!!! )
Last night I also recorded Pulse Oximetery on my CMS50F. The most stable I've seen it in a while.
My leaks are getting embarrassing on some nights - I need to do something about that. Still technically under control, but I still need to learn to keep my mouth shut while sleeping. (not to mention sometimes while I'm awake too.. )
So it's beyond a doubt that ASV solves my sleep breathing disorder (whatever the heck it actually is!) but does not give a let up in fog/headaches or an improvement in energy - something else is causing that. I have not felt up to writing code since the second night on ASV, but that might just be too many late bedtimes in a row. :-/
I'm going to look for a newer machine.. I really think I should get one that monitors Flow Limitation/Snore, this one I've got a loan of doesn't give enough feedback for my particular circumstances. (It is still a great machine, and it's up for sale by it's owner by the way, and it's not easy to come by an affordable pre-loved VPAP adapt in Australia.)
As for my hip, after an xray and blood tests, the doc diagnosed it as bursitis, and prescribed some decent anti-inflammatories, which work wonders - they stop heaps of my other pain while moving about too. Still have no strength to stand on the left side, but I'll settle for being able to still stand up using the right side, and move about without needing to curse.