I think I have this problem too. I start the night OK but wake up because of air blowing cold on my face or into my eyes. Sometimes it's the noise that wakes me - whistling noises or worse I am using a Resmed Quattro FX but I can't say that I was aware that it prevents jaw dropping. I sleep on my ba...

Hi. I'm also a newbie and having mask trouble - at least, I think it's mask trouble. Each night I start off fine but as the night progresses my mask (Quattro FX) seems to get looser and starts leaking. I'm not sure if this is due to the muscles in my face relaxing or what, but usually about 4AM I am...