A sad day, today the PECE with XP disconnected, the logg in the DIR655 said:
disconnected for reason: Received Deauthentication.
The Apple WIFI is still rock solid, it was not before, so there is a big victory.
Googling on "disconnected for reason: Received Deauthentication", it seems like many has this problem, but no solution.
I wish I could toss out this PECE and replace it with a MAC, but I can not due a certain application.