I've only ever had two routers, the first earlier this year after using a modem until getting a new computer, and someone else set it up for me.
After many disconnects in recent weeks, I was advised to try a new router so got the Billion 7800n (may upgrade to FTTC sooon).
Disconnects seem to have stopped and it's been steady for 11 days now
However, I suddenly realised after a few days that the wireless was not protected, and seeing we don't use the wireless, I disabled it and there's now a red X next to it's status in the router interface, and the routers wireless indicator light off.
I have also changed the log-in password for the router - Is it now safe please ?