I have been having the same problem and have tried many solutions suggested on the net. Usually the problem is accompanied by the yellow triangle in the network icon in the system tray. I would like to know how to "introduce" pcdrcui.exe to the firewall, in my case the Windows Firewall under W7. I did create an entry in the firewall asking it to permit outgoing connections by that .exe, but it had no effect on the PC checkup results.