Troubleshooting wi-fi connectivity with Intel Centrino Wireless N-1030

There is a problem which has cropped up recently on my Dell Vostro 131. It refuses to connect to my Linksys WAG54G2 router, and when it does, the connection breaks almost immediately. I established that it could not be a router issue (I sit and work on the sofa next to the damned router) and besides, other devices including my iPad and my old Dell XPS laptop are connecting perfectly well. So I figured that it's a problem with the network adaptor/ drivers. Here is a summary of the steps that I took to address the problem. They seem to have worked, but I will be calling Dell customer support if the problem persists. Do note that I use Windows 7, and the screenshots I have posted may not be applicable for XP/Vista machines. Intel acknowledges that there is a problem with several products - see the list in the article for details. The feature called 'Power Saving Polling' which is intended to save battery life but can cause problems if the router or access point cannot im