Originally Posted by Ignitionnet
It's the time when most people are asleep and service disrupting work is done on the networks which is not always documented to customers especially if the outages are brief.
Not noteworthy there should be a fair bit of work in a variety of places going on which will not be documented on service status due to brevity of outages.
Maintenance window is 1am - 6am as I remember, outages between those periods are nothing to be concerned about.
EDIT: Given you posted this both here and on the official forum I would speculate you'll get a more informed answer from the staff who are paid to answer there.
What im a bit worried about since whatever they have done the modem takes ages now to lock on to an upstream channel 20 - 30 seconds.