Thank you Helen, as you say the connection strings are not exactly the
same.

In non-English Windows Vista Microsoft has changed the rules for
naming program files path. In older versions there always was
"C:\Archivos de Programa", nows it is "C:\Program Files", leaving a
kind of symlink for "C:\Archivos de Programa".

I was having two different connection strings to access the same
database :

computer 1 -> "192.168.0.4:C:\Program Files\Almacen\Database\DDBB.fdb"
computer 2 -> "192.168.0.4:C:\Archivos de
Programa\Almacen\Database\DDBB.fdb"

Both connection strings seems valids local paths, so do you still
think there is a risk of corruption here ?. I must choose one ?

Thank you again.