Various searches for that phrase bring up a lot of people with wireless issues on a laptop but this is a desktop with a 100 mb Ethernet connection, which has been working fine for the past 4 years.
He is running Vista x64.
We managed to fix it briefly by uninstalling the drivers for the network card and rebooting, but now even that isn't working.
Ipconfig /all shows he still has the same IP address he's always had and the NIC has the same DNS server address that my fully-accessible machine has, 192.168.0.1.
I have also tried the /flushdns, /release & renew functions to no avail.
I have also tried fully replacing the drivers with a fresh download from the Marvell site and still no joy.
Here is a copy of his ipconfig:
Windows IP Configuration
Host Name . . . . . . . . . . . . : user-PC
Primary Dns Suffix . . . . . . . :
Node Type . . . . . . . . . . . . : Hybrid
IP Routing Enabled. . . . . . . . : No
WINS Proxy Enabled. . . . . . . . : No
DNS Suffix Search List. . . . . . : cable.virginmedia.net
Ethernet adapter Local Area Connection:
Connection-specific DNS Suffix . : cable.virginmedia.net
Description . . . . . . . . . . . : Marvell Yukon 88E8071 PCI-E Gigabit Ethernet Controller
Physical Address. . . . . . . . . : 00-1F-E2-59-FF-14
DHCP Enabled. . . . . . . . . . . : Yes
Autoconfiguration Enabled . . . . : Yes
Link-local IPv6 Address . . . . . : fe80::d987:5b5b:1123:788%11(Preferred)
IPv4 Address. . . . . . . . . . . : 192.168.0.100(Preferred)
Subnet Mask . . . . . . . . . . . : 255.255.255.0
Lease Obtained. . . . . . . . . . : Tuesday, August 28, 2012 9:23:09 PM
Lease Expires . . . . . . . . . . : Tuesday, September 04, 2012 9:23:08 PM
Default Gateway . . . . . . . . . : 192.168.0.1
DHCP Server . . . . . . . . . . . : 192.168.0.1
DHCPv6 IAID . . . . . . . . . . . : 301998050
DHCPv6 Client DUID. . . . . . . . : 00-01-00-01-12-A7-05-A8-00-1F-E2-59-FF-14
DNS Servers . . . . . . . . . . . : 192.168.0.1
NetBIOS over Tcpip. . . . . . . . : Enabled
Tunnel adapter Local Area Connection* 7:
Media State . . . . . . . . . . . : Media disconnected
Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : Teredo Tunneling Pseudo-Interface
Physical Address. . . . . . . . . : 02-00-54-55-4E-01
DHCP Enabled. . . . . . . . . . . : No
Autoconfiguration Enabled . . . . : Yes
Tunnel adapter Local Area Connection* 6:
Media State . . . . . . . . . . . : Media disconnected
Connection-specific DNS Suffix . : cable.virginmedia.net
Description . . . . . . . . . . . : isatap.cable.virginmedia.net
Physical Address. . . . . . . . . : 00-00-00-00-00-00-00-E0
DHCP Enabled. . . . . . . . . . . : No
Autoconfiguration Enabled . . . . : Yes
