Hi Eric, I disabled IPv6 and it seems to be able to communicate offline now. Thanks for all your help! Alexis Cheng Electrical Engineering University of British Columbia So it seems that you only have IPv6 addresses for localhost when you are not connected to a network. I have no idea why that is... maybe you can check the network settings in Gnome to see if there is anything that looks like it could cause this behavior. Or see if you can just disable IPv6 entirely if you aren't using it. - Eric _________________________________________________________________ 30 days of prizes to be won with Hotmail. Enter Here. http://go.microsoft.com/?linkid=9729709