peer to peer shared folder missing files

i have a client that is shareing lets say c:\myfiles on there win 2000 workstation with other users the files shareing permissinos is full for everyone the other workstations are say running wordperfect when they click file open they are missing files that have been saved to the sared folder (so it seems) if they reboot the file open then shows the files that were missing i turned off offline viewing any other suggestions that will sync the folders faster or update them so that when someone onthe network save a file it updates all other peers so that they dont have to reboot to find files that are acctually are there ( what is casueing this problem)>?? thanks