We are using Hummingbird Exceed 2008 to connect via rlogin to an AIX machine and open different sessions. If the user is leaving it's PC for more than 15 minutes sometimes the terminal windows are closed. The PC is not in hibernate mode or something similar. Also no hardware switch off etc. We have tried it with different PC's, other Network Socket, other Network cable etc. Also the ping statistics to the server is not showing any interuption.
Do you have any idea what could be the root cause of the problem and how to fix it?