[Samba] Samba 4.2 extremely slow with (some) XP & Seven boxes

[Sébastien Le Ray]

Hi there,

After an upgrade our fileservers to samba 4.2.10 (debian package), some 
(but no all) of our XP and Seven boxes are extremely slow. Toggling 
"require strong key" to no does not help. Our DC are still 4.1.17 
(debian package)

Is there any known issue?

Regards