It has now been almost 25h since I set my OC1 on Nitrox, and it is still set on Nitrox. I have kept it in dive mode most of the time.I ran another test on my OC1. Set it to Nitrox yesterday evening; it is STILL on Nitrox, about 16h later.
The difference from the previous test is that in the previous test, I put the computer back on watch/time mode after setting it on Nitrox. This time I left it in Dive mode.
I simply cannot verify much of the info in this thread.