Thanks for your help!! Wow, 7 days do not sound very long - do you know the tool PersistantDB? It seems to be able to save MP Games - this should be a possible solution, if it works. - then we could run MSO for, lets say, 3 days - save the status quo, reboot and restart the saved mission.
http://forums.bistudio.com/showthread.php?111484-ArmA2-Persistent-Database-Scripts-WIP/page8
Any experience with that?
Cheers,
sw0p