our company just installed a new cisco 4506 with a sup4, and set up multiple vlans, with the vlans shown as a directly connected route now it will take several minutes to find a new item once placed on a network and using dhcp-helper command will now reissue the same ip address to multiple users, on the server it dose not see the mac address change and we will get the warning on the users pc of duplicate ip addresses, seems to be all related to the 4506 install and vlans anything i am missing ?