MaxG:
Wow... great spotting...I was thinking of not using any library for the DS3231 (I think I remember it chewed up an extra 2k)...
Well, in order to isolate the problem, I will go back to basics, and remove any reference to the DS3231... and start over...
... will report back...
can you share the program that you have made? I happen to be doing a similar project now