I've updated some of my wheezy/samba3 networks, hit the 'i cannot talk to myself' bug, and so added:
client ipc signing = no to solve. But after some days, as stated by Vladislav Kurz, i've started to get errors about trust relationships failed or domain controller not avaliable. I've testet *ALL* combination of: ntlm auth = server signing = client signing = client ipc signing = and i've done may time the unjoin and rejoin operation of the client, nothing changed. I've reverted to old package: apt-get install samba=2:3.6.6-6+deb7u7 samba-common=2:3.6.6-6+deb7u7 winbind=2:3.6.6-6+deb7u7 libwbclient0=2:3.6.6-6+deb7u7 smbclient=2:3.6.6-6+deb7u7 libnss-winbind=2:3.6.6-6+deb7u7 libpam-winbind=2:3.6.6-6+deb7u7 samba-common-bin=2:3.6.6-6+deb7u7 samba-doc=2:3.6.6-6+deb7u7 and samba get back at work as expected. I hope on u10... but as Vladislav say, i'm asking if there's also some registry tweaks to update client-side... Thanks.