Does anyone have any suggestions about where to locate factory classes?  I've got a bunch of static factory classes that I use to create other classes.  I've put a lot of these into my common tier, in our Common.Util namespace.   I just ran across a class that I can't put into my common tier, since it references a business tier object.  So I've put it into my Business.UserAuthentication.Util namespace.  But, now I'm thinking that a VIT.Business.Factories namespace may be best.  Or should I locate these in a  Util namespace for each assembly?

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