I’ve tried it with 3.11- no go.
Everything looks good, links are built like so:
http://192.168.1.6/?m=201104&cat=4 for March 2011,
unfortunately my permalink settings (Day and name http://192.168.1.6/2011/04/06/sample-post/)
turn everything into:
http://192.168.1.6/category/cat1/
(cat1 is the correct category name, I assume it has ID 4)
