>>>>Now and then, users get an error message, "Error reading file". This happens mainly when trying to save data. The application doesn't manage this error graciously, and users have to "kill" the application.
>>>>
>>>>We suspect that this is mainly due to occasional network connectivity problems - but that is precisely what I wanted others to confirm/refute.
>>>>
>>>>No C/S, just plain old VFP database on a shared folder.
>>>
>>>There are two options:
>>>-network communication error
>>>-disk error
>>
>>Oh, right, a disk error might also be a cause. Of course, since all data is transferred over the network, I strongly suspect the network in this case.
>
>It occured for us for our one network client; if user doesn't use application for a while, that error occurs. we think about "should be there is a network connection timeout parameter at win xp". but where? :S

One place, which caused disconnect errors for us when there was no user activity, is the network adapter, under system/hardware/device manager/power management tab. The check box "Allow the computer to turn off this device to save power" is checked by default.