After today's Squeeze upgrade from 3.4.8 to 3.5.5, domain logons were initially broken. I was fortunate to find Thomas Burkholder's workaround from last June, i.e. turn off server signing. Can anyone explain why "server signing = auto" no longer works in 3.5.x? Thanks. Dale http://lists.samba.org/archive/samba/2010-June/156237.html