I think I'm going to have to plant tomatoes only in the front garden next year. Plants there had blight in 2008, but seem free this year, but the back garden plants got it bad. Didn't get any blight anywhere last year, when my only real precaution was to avoid planting in the same bed as the blighted plants of the year before.
Still, got a damn good crop off 'em before the blight struck, much better than 2008. I've been giving tomatoes to all & sundry.