Hallo KM,
hier eine Antwort von IBM:

Problem Summary:
The History Log contains several instances of the following messages:

CPIAD09 - User &4 from client &8 connected to job &3/&2/&1 in subsystem &6 in &7 on &5.
CPE3426 - A connection with a remote socket was reset by that socket.
CPIAD08 - Host server communications error occurred on &1.

These messages reference various QNPSERVS jobs. Why are these messages generated and what can be done to get rid of them?

Resolution:
These are messages that are generated each time an iSeries NetServer connection is opened and closed when using iSeries NetServer print shares. Microsoft Windows XP causes more of these messages than other versions of Windows. These messages are normal and cannot be turned off or moved to another message queue.