can you specify more detail?
Where is DNS on your network? is it a domain server? is DNS on this fog server? [B]IS DNS and DHCP on the same server?[/B]
Also, please verify that you only have 1 DNS server on your network. (may have installed it with fog and now you have two… that happend to me once.)
please provide more detail and we can try to help you further. also what does an NSLookup command show you?