Are these problems over a domain or a workgroup? In our office the people on a workgroup seem to have problems staying connected and yet Amazing Charts still works, although it seems to be working on a cached version of the files. For me, some problems were solved by deselecting the "Simple File Sharing" box on the View tab of Folder Options (Open My Computer ->Tools ->Folder Options ->View(tab)->go to the bottom of the list). Worth a shot anyway.
