We also noticed in our LUA environment that the daily download are now huge !!
In April the downloads was around 5GB per day plus one hub around 10GB but since we are now around 10GB every day ? The definitions really doubled size in 2 month ? (We only download Manager Contents Updates)
It's really hard if not totally impossible to find the actual size of each def on Symantec site/forum to understand if we have a configuration issues if it's a normal behavior etc.
It's hard to go back to clients saying only look this is normal behavior def are growing every day etc without having real facts from Symantec to based this arguments.