Mind you, I was using thunderbird and when I copied my mail files (i.e. the "mail" directory) to the new thunderbird directory it made thunderbird crash too, but I was having success with evolution by importing the folders one by one.
But now, unlike thunderbird, the program starts all right, but when I try to get my new email the whole thing crashes and I have to enter my name and password again. When I return to evolution I find that the new messages are there waiting for me, but it will crash again if I try to get any new mail. Since I'm not accessing my possibly evil old folders I figure this isn't the problem, but maybe it is? I have over ten years worth of email from friends that I don't want to abandon!