Windows 7 red x on network drives after hibernation

[weeder]

I am running windows 7 sp1 on a laptop. I have 9 network drives mapped. After I close the laptop lid (hibernate) and re open the lid, all the network drives have red x's. I can click on each drive and they come back. Is there any way to stop this from happening?

 

[skyrock]

I had met the same problem before. The problem resolved after I restarted the router.