No, never had anything other than wired LAN and it's not set to go to sleep!

Do you have anything filtering packet or HTTP data? Protowall, 3rd party firewalls, antivirus, etc? Tbbmeter? Anything which may be related.

Might be worth uninstalling and reinstalling the NIC drivers..

Edited by Pipexer (Fri 08-Jul-11 17:30:24)

All settings on the problem PC are identical to the one that works OK. And yes, have uninstalled and reinstalled NIC drivers.

I have even tried System Restore back way beyond the time this problem started and "no changes were made"

Edit: Winsockfix!! Problem solved

Edited by Andrew_W (Fri 08-Jul-11 20:24:45)

one last suggestion:
have you changed the network cable, (and router port that it goes to) ?

edit:
just seen your edit that it works now

Edited by ggremlin (Fri 08-Jul-11 20:36:14)

You missed my edit in my last post, Winsockfix fixed it!!