My problem was that my network connection was dropped. I am using Windows 7 64-bit with AI Suite II. After switching users, then logging out of one of the users, then logging back in to an active user, my network connection was disconnected. I was able to restore the link by disabling then re-enabling the network adapter. Then I saw complaints about Network iControl. After I went into AI Suite II (I am on the latest release), I disabled the Network iControl piece. I did not uninstall the whole AI Suite II, just the Network iControl. Problem solved. My network link stay up after multiple login and log out to various users on my system. This is probably not a problem for most users but it was hard to diagnose and resolve. Hopefully this will save the next user some time.