I did mean improperly using cached results. It's merely the hardest problem in computer science :) The sibling suggests this may still be an issue. I'm not sur

I did mean improperly using cached results. It's merely the hardest problem in computer science :) The sibling suggests this may still be an issue. I'm not surprised—cache invalidation is very difficult to solve, and conservative approximations like tearing down the whole process each time tend to be quite effective.