I have made a database for my work. This database I have spilt in a front and backend. The backend are placed on a server and the frontend are placed on two different computers. My problem is that some times, and only some times, when you enter data into the frontend, the data never gets to the backend. Yesterday one of my users was entering data into the frontend for four hours, but nothing was never saved into the backend, it was all lost. My user could see the data in his frontend when he turned off the computer. But later that day, when he turned it on again, the data was gone. But the wierd thing is that is only happens sometime. All I have done is to split the database into a front/back-end, and then link them together to the backend again from different computers. But my users, are mostly using my database at the same time. But have I missed something when I created this database ? Can some one guide me with this problem ?