>Thank you Dragan!
>
>Just canceld the mapping and reconnected via SUBST. The performance is ok now.
>
>Now the question is: How can I get a better netword performance?

Look up these subjects in help: "Speeding Up Data Retrieval", "Optimizing the Operating Environment", "Optimizing Access to Remote Data", "Performance Improvement on Updates and Deletes" and other less helpful topics I found when I searched for "speed" there.