I don't know exactly what's different about ESS v.6.x but I encountered an issue that could only be resolved by uninstalling and going back to v.5.x. I went over my settings with a fine tooth comb. I tried an upgrade install and uninstalling v.5.x before installing v.6.x. I even performed a bare-metal installation from the O/S up. Here's what happens with v.6.x: I use Dreamweaver CS6 for web development on a Windows 7 x64 box. I open a file (network share) in Dreamweaver, make some edits and save. As soon as I do that, I get a few alerts from other programs that are running in the background that they cannot access the network shares that contain the files they need. I then try to use Windows Explorer to access any share. It's as if they do not exist. I can access the shares if I use the IP instead of the name. What's weird is I can ping both the name and the IP address of the computer that hosts the shares and I can browse the Internet normally. I can recreate this issue every time I edit/save a file in Dreamweaver. I've checked and all necessary system services are still running and I've even tried restarting many of them. The only way to get the system to see and/or access the network shares via name is to disable and re-enable the NIC. So now I'm back to using v.5.x and all is working once again. This seems to be a bug or some new feature that needs to be tweaked. Anyone have any ideas? I see no errors other than the apps that loose connection to the shares.