In Deep Breath after seeing droids, he tried to remember seeing these things before but doesn't put it right:
DOCTOR: I've seen this before. I'm missing something.
DOCTOR: It's the brand new head, rebooting.
CLARA: Come on.
DOCTOR: I've seen this before.
DOCTOR: SS Marie Antoinette. Out of control repair droids cannibalising human beings. I know that this is familiar, but I just can't seem to place it
DOCTOR: Sister ship of the Madame De Pompadour. No, not getting it.
Why didn't the Doctor remember encountering the clockwork droids before in his 10th incarnation? Did his memories of all his 13 faces' adventures need to recharge?