Howzit guys, I am having a strange issue with one of our clients. They're running an SBS 2003 SP2 server. Which runs their exchange, ISA, Internet. Now, everything has been working fine. Until recently, three XP machines are now getting connectivity issues. They can connect to the server, MSN, Skype etc. But cannot browse the Internet at all. Just a (Almost instant) "Page cannot be displayed" error message. I have tried giving them static addresses and doing a full win sock reset, etc. the only way to get them back on it disable or repair the NIC on their machines and all is well. For about, 10 to 40 minutes until it stops working again?? I am running out of ideas now! Any advise would be greatly appreciated!