I just checked it out... it looks uglier than several weeks ago... D76 from last year still looks fine...
I suppose anything that falls out actually is supposed to be solved... I will see, how the negatives print... and try to mix it with warmer destilled water the next time. Or change my developer...
20:
3 below 20 in my case actually should not be that serious. (some people mix it double strength without any problems... If 20 would be the critical temperature, they would have to store it significantly warmer than 20 to have no fallouts...)