>>SMB / Oplocks
>
>Strange thing is we did not change anything on server. It was workstations that got upgraded.
>Before we did not hv such problem, although it could be coincidental.. but this is only thing that changed in a past month.
>I am using buffering 5 / transactions and so far had very good results. Now in this case it is not corruption that is the problem but as Albert called it 'Data Lag'

Close/reopen tables after saving a document? Shouldn't cause much of a slowdown nowadays - it was a problem 20 years ago.