robtillaart:
Together with Rodrigo Castro an Arduino 1.0 update was made for - Arduino Playground - DS1307OfTheLogshieldByMeansOfNTP -The code should work under 0.22, 0,23 and 1.0
As always comments and remarks are welcome, in this thread.
I think there is a typo in the example sketch on the playground.
#if ARDUINO >= 100
#include <EthernetUdp.h> // New from IDE 1.0
#else
#include <UDP.h>
#endif
UDP.h should be Udp.h
At least on my system:
sketch_apr26a.cpp:31:17: error: UDP.h: No such file or directory
I'm still using version 0023, my gentoo installation and 1.0 don't play nice. I should do something about that and switch to 1.0 
Oh, and thanks for the sketch and libraries.