we used ICS for a while in our office and often had problems like this and i never got to the bottom of it. since we got broadband and a router we have never had a problem like this. our internet router acts as the dhcp and it goes into a switch and from there to our office network.
Slán
~M

>Thanks for your reply,
>
>Yes, my cybercafe is of just a 8 computer setup. so do u think i shuld use such devices for such a small setup.
>
>so i find ICS suitable for me. do u have any solution. I think the problem is with the DHCP. but how should i troubleshoot it that i dont know.
>
>again thanks for the reply but pls help me again.