I have a firewall appliance that uses DNS records of PCs and user authentication from LDAP. (Windows environment). The PCs in the environment are displaying old DNS records and not updating. This in turn is affecting the firewall (due to multiple computers having the same DNS record). It isnt happening to all workstations. Majority are updating but some just wont. Any ideas? DHCP is providing the addresses no problems but from there the new records dont seem to be getting to DNS.