from what i've observed it appears Norton performs live update automatically, continuously & does not factor bandwidth usage (unlike Microsoft BITS).
now this can be frustrating for users that are on dial-up (like i) and would want their network connectivity to be used for a different application during the same period that updates happen.
how about Norton;
1] provide users an estimate size/ time taken for download to occur
2] recognize a dial-up or low speed connection
3] automatically recognize network usage by other apps & minimize its (Norton's) own network utilization for update download
4] allow users to choose "continuous" or "piecemeal" download of updates
thoughts?