It's not a vista problem but a microsoft problem. I've got XP Pro and it started happening to me 3 days ago. It is a real pain! It's with all browsers, IE, FF, Opera and netscape. I gather from the posts so far theat we are looking at a hardware config problem on the machine itself as it's very unlikly we all have the same hubs/switches/routers attached.

Hope someone comes up with a solution to this soon as it's doing my nut in!

Paul