ryuan
From Zero to Hero!
That's actually worrying, since Ben managed to awaken his Wall back abilities quite quickly, so it's probably nothing directly affecting Winterfell.It's been a long time, and there are plenty of things the Starks have forgotten. When we visited Winterfell in the dreamworld, it was a massive fortress... and explicitly unmanned. Nothing was guarding the walls.
The Starks have been slower than most to awaken to their heritage.
Is Ned really that much of a screw up himself, or did something wrong happened that kept the Starks out of the loop?