We use Dell E4300 notebooks which have the intel 82567LM using the standard drivers in W7 RTM. After resuming a notebook from sleep, not all of the network drivers are immediately available, with an NTFS label but not green bar indicating used space. If you try and click on a network drive you get a message saying the network path is not found. After a while the drive comes back and if you reboot or logout the drive is available. We have desktop machines with a broadcom nic and when they resume the network drive is back instantly. Is this a driver issue? We do use DFS so for instance a users work share is mapped to \\domain\dfsroot\workgroup\drive but this shouldn't make a difference because as noted when resuming from the desktop machine it works instantly. Any ideas?

This may help: Go to Control Panel > All Control Panel Items > Network & Sharing Center > Change adapter settings (in the left pane), right-click on the connection youre using > Properties > Networking Tab. Now remove the tick from the IPv6 box. If it makes no difference or causes problems it is completely reversible by ticking the box. Also, click the Windows Orb (Start), type devmgmt.msc and press Enter. Expand Network Adapters > double-click the wireless adapter > Power Management Tab and make sure the check box is cleared against Allow the computer to turn off this device.