[Zope-dev] Turn-off undo.

Hi folks: I'm having some problems with undo level, due to a poll flood, my Data.fs file have grown from 2MB to 150MB which turns Zope to a turtle (too slow), I already packed Data.fs, but I want to prevent this from happening. So I need to turn off undo, so Data.fs won't grow anymore. Does anybody knows how can I do this? Thanks for your help. mazza.br