Apologies if this is more of a "troubleshooting help" post, but I'm pretty sure my issue lies somewhere in the network. So I've got 7 and XP dualbooting on a single machine with an Intel 5100 AGN wifi card. After some driver issues initially, this works fine in both OS's. It gets interesting when I try to swap between them... - I can cold boot and reboot in a single OS all day long, no issues. - If I reboot into 'the other' OS (whichever one I didn't cold boot into) there are no visible networks. Nada. Wifi still working fine for other devices. Adapter still present, no obvious errors, just no networks to connect to. - If I then reboot back into 'the first' OS (the one I cold booted into) I suddenly have no visible networks either! Only way to resolve this is to shutdown, and leave it for a time (haven't measured sorry, but seems to take at least a few min). An immediate cold boot doesn't restore networks. This is the same with DHCP and assigned IPs. I'm using a Bob-Lite with NAT, WPA2 AES, no MAC filtering or additional security, save for a hidden SSID. My only guess is that something odd is going on with the router confusing the two 'clients' with the same physical MAC address. I thought maybe it was something to do with IP leasing but it's exactly the same with static IPs Any input or ideas would be much appreciated. Oh, and it's good to be back. Right now profile info is telling me my last visit was 23/3/13.