Dave> I notice a proliferation of choices in SpamBayes of where to store Dave> my training data (pickle, ZODB, etc.) Is any one of these Dave> markedly better than any other? It all depends how long you use the database after opening it and how big it is. I use pickled files and sb_bnfilter.py to score messages. That version of sb_filter.py fires off a backend server which stays alive for awhile. That helps amortize the cost of decoding the pickle. Skip