Did I speak a bit too soon?
I've just checked my logs to find that there have been 2 drop-outs since I put the Billion back on.
One (lost-carrier) at 04:21 today after 25 minutes short of 2 days uninterrupted connection, and another (port-error)
at 04:47 on the 15th after 1day 15 hours continuous.
It's not a problem as I'm horizontal at that time, but it does seem a bit odd.