Greetings!
How are you connected? From what I read, it sounds like it could be one of the following:
Your computer could be trying to do a DNS query and failing.
Your computer could be trying to get to the IP address of the empeg, but the route you are using goes through your ISP.
You are not using a hub, but a multifunction DSL/Cable/NAT device, and you are disconnecting from that.
You might want to try putting in a static route on your computer. Try doing (while connected) a traceroute to your empeg, and then try the same trick while disconnected.
Paul G.
SN# 090000587 (40GB Green)
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Paul Grzelak
200GB with 48MB RAM, Illuminated Buttons and Digital Outputs