This is also happening to me just after the security upgrade of winbind package from '3.0.28a-1ubuntu4' to '3.0.28a-1ubuntu4.4'. Is the only package that I have upgraded, before, samba was working perfect.
This is also happening to me just after the security upgrade of winbind package from '3.0.28a-1ubuntu4' to '3.0.28a- 1ubuntu4. 4'. Is the only package that I have upgraded, before, samba was working perfect.