Every log rotation sends "stdin: not a tty" to root on systems where /bin/sh is dash. I'm assuming this is because we need to make the same changes to the thinlinc-{tlwebadm,tlwebaccess} logrotate scripts as we did for thinlinc-vsm-{server,agent} in bug #4471.
r27863.
Tested running thinlinc build 4113 on Ubuntu 12.04 LTS over 5 days including a weekend which triggered a logrotate. There were no messages for root.