Problem Solved! Incredible!  As I was concerned that there are some conflicts in the WiDi software, I have created a fresh new User ("WiDi") in my Laptop, and I do not believed when the WiDi worked OK! I have connect to NetFlix and watched about 1 hr of  movie without problem! But my std user still do not work with Widi giving the same problem, I do not know why.  Maybe some configurations stored in the User files? Anyway, I am considering now using my new user "WiDi" exclusively for use with Intel D-Link WiDi  and NetFlix. Pascal
Performance and Reliability Problems with  WiDi  Two  month ago I received my new Laptop Dell Inspiron 15R (N5110) with Intel Core i5 Sandy Bridge, WiFi Centrino N1030, Intel HD Graphics, Windows 7 Home Premium 64 Bits and my new D-Link DHD-131 MainStage TV Adapter.  I had successfully made the setup of my WiDi with a LG 47" TV, and I have tested the WiDi  a little without any problem, using the Clone Display option and the Extended Display Option (1920x1080). The WiDi interface have successfully updated  the D-Link firmware and I have used it a few days without any problem.    WiDi was performing 100% OK.  Two days ago, I have decided to use it again, and for my surprise the WiDi now has serious performance and reliability problems, and it is totally unusable!.    The WiDi starts OK, but it have very poor performance, interrupting the video transmission after less than a few minutes, keeps turning the TV screen black and restarting again, sometimes shutdown the connection permanently. Other times there is a visible lag between the image in laptop and the image in the TV or sometimes the TV screen shows  little coloured squares pixels and this causes the restart of the connection again and again. The problem occurs using the Clone display option and using the Extended display as well,  appears that the problems is the same. All this is  making WiDi totally unusable.  I have tested the WiDi connection using another TV (Samsung 32"),  have reset the D-Link firmware to factory default, restored my Windows 7 to a  previous restore point down to one week ago, installed new Laptop BIOS, reinstalled the WiDi application, but nothing resolved the problem.   As my Windows 7 Laptop is kept update  by Microsoft (Windows Update)  and I usually keep the hardware drivers updated using the Dell Support Center Tool, I suspect that some of updates for  drivers or related software is causing the actual problem. A complete Dell hardware test showed  no problems with the Laptop hardware.  Versions of the related  WiDi drivers and software:  Windows 7 Home Premium: Intel Centrino WiFi N1030:  14.2.0.10 Intel HD Graphics:  8.15.10.2361 Intel PROSet Wireless WiFi: 14.2.0.10 Intel WiDi: 2.1.42.0 D-Link DHD-131 MainStage TV Adapter:  Firmware: 2.0.39.0 (original) and 2.1.16.0 (updated)  Note: the blue screen logo on MainStage shows "WiDi 2009-2010" whereas in Windows 7 WiDi software it shows "WiDi 2010-2011". This is normal? What is the latest firmware level for DHD-131? If it is not 2.1.16.0 how to get it?  Thanks 
Wireless Display - Performance and Reliability Problems with WiDi