> I have an application installed in a network with the following technical data:
>
> Delphi 5 with IBX
> FireBird 2.1.2.18118 SS
> Server: Windows 2003 Server
> Clients: Windows XP SP3
>
> There is a database that is corrupting very frequently. The problems began many monthes ago. I don´t remember any relevant change in the network by that time.

Can you switch to Classic Server and see if it make any difference?

SY, SD.