Hello, I'm with a strange issue. I have just take care for a environment that users get proxy by wpad. so far all it's work. the targeted wpad is deliver by DHCP ( Server Windows 2008 R2 ) that forwards to proxy squid. when I change the ip address of my target wpad what is my proxy squid ( I have done in the dns server ) some clients what are in static ip stop to work! from client I'm able ping to new wpad address but when I go to access the Internet by browse ( IE ) it still search for old ip address the wpad. where is the cache ?? some tips is welcome thanks