I have an external HDD attached to the USB port of my Netgear DG834GUv5. When I use an FTP client, I have no problems transferring files to and from the HDD attached to the router. But when I try and transfer files to the attached HDD using WinXP Local Network Places or even as a mapped drive in WinXP, it works for a short while and then gives an error that the specified path no longer exists (then my router locks up and loses internet access and I have to restart the router). Are there any ports that I need to open or any settings I need to change on the router?