We are having a weird problem. We have a LAN setup for our school. The computers in student dorms are getting IP addresses from our DHCP server but they are not able to surf internet. Sometimes it loads pages, sometimes it doesnot. I tried to ping our main server and outside website and it gets a reply few times and times out few times. Client computers in other buildings are working fine. If I use static IP address on a computer in dorms, it still does the same thing. They get connected and sites load sometimes and other times they time out. We have to Domain Controllers on 192.168.x.x address. We have a superscope setup and students are on 10.0.x.x scope while faculty and staff is on 10.10.x.x Any suggestions?? Everything has been working fine. The last thing i remember doing was adding a reverse lookup zone in our primary domain controller. That zone is already in our secondary domain controller. I am not sure if i can just delete it from our primary DC because it says it is active directory integrated zone and it will be deleted form AD too. any help???