Nopes.
[6-11-2011 16:29:40] [Main] Scheduler enabled
[6-11-2011 16:29:43] [Main] Scheduler disabled
[6-11-2011 16:29:47] [T4] Bye
[6-11-2011 16:29:47] [T2] Bye
[6-11-2011 16:29:47] [T1] Bye
[6-11-2011 16:29:47] [T3] Bye
[6-11-2011 16:29:47] [T1] Hello
[6-11-2011 16:29:47] [T3] Hello
[6-11-2011 16:29:47] [T2] Hello
[6-11-2011 16:29:47] [T4] Hello
[edit]
Found the problem.
The user wasn't able to change the configuration files. This caused that changes weren't applied/saved after quiting the application.
So the problem seems to be fixed.