4.1 hashed collections, across the board, small to large, are slower
by a factor of 2?!  I just don't think we can keep doing this; getting
slower and slower and slower, like molasses..  I'm sorry, but I really
care about this and I know you do too because speed was the whole
premise of putting these changes in.

What went wrong?  More importantly, how can we fix this?
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