I have a solution with 30+ files. To host this solution on a network, I use an 'open all files script' at startup. The main file also has a closing script which closes all files. So now I access the solution on a guest machine and when I want to quit on the guest machine, the closing script seems to take forever, about a minute or more just to close the files even if they haven't even been accessed. Why does it take that long and is there anything I can do to speed this up?

well i think i found the answer myself: the guest should run the close file script first so that all files on the host are still open. then it works quite well.