>I would have thought that I'd be within spitting distance of the sorts of >numbers you reported with the 5x5 scheme. I'm training on 1600 hams and >1300 spams. You were training on 4000 hams and 2750 spams I believe. Sorry to seem like a lamer, but what's the difference between a ham and a spam? Being unable to find this info on-line, leads me to ask here. John