Make oldconfig silently disabled support for my CONFIG_TIGON3 NIC. It seems that it depends on CONFIG_NET_GIGE which in turn depends on CONFIG_NET_ETHERNET which was not required in 2.6.6 kernel.
Jeff, you might want to add a "default y", so the options depending on it don't get reset. (Removing NET_ETHERNET was already mentioned on lkml.)
CONFIG_NET_GIGE was removed before 2.6.7-final.