i guess the 0.3.24 number is more correct since it's a later version, but why is the older one therefore wrong?
The algorithm for calculating the printed difficulty was slightly inaccurate and was changed for a correct one. Since the printed difficulty is for humans only, it's not a big deal.
The discussion is here:
https://bitcointalksearch.org/topic/slight-error-in-difficulty-computation-10002
thank you... sending you some bitcents... so handy to be able to immediately see an address in your signature without asking you, despite all the threads talking about people's so-called 'begging' for donations.