I have reinstalled firmware version 1.04.10 on one of my cameras.  First the installation is not clean... the camera reboots itself and then the browser gives a  403 error when trying to connect to the camera until the camera is power-cycled... so that is one problem.  Secondly, the firmware does indeed frequently ask for duplicate authentications from  "NIPCA", whatever that is.  When clicking on a .avi file for viewing often you get an immediate request for authentication followed by another request for authentication from the same source "NIPCA".  I am reinstalling the older version.