Hi all. Running a mid-range 2011 11" MBA with the latest version of Lion. WiFi problems are getting to be unbearable. I will preface this by saying that my university's WiFi routers are patchy at best, and that their user-ID system might be causing some interference. However, I experience most of the same issues at home too, where the connection is pretty reliable. Here is what I'm seeing: Lion doesn't remember my preferred networks. Whenever I have to reconnect to WiFi, for whatever reason, it gives me the same dialog, "none of your preferred networks are available." Then I have to pick the network from the list, even if it's the only one there, and even if it's the same network I've been using practically every time I use my computer. I never have a working WiFi connection when I open my laptop. Doesn't matter if it's only been closed for 5 minutes for a walk from one room to another, my WiFi connection never survives. It may be just my imagination, but it seems like several weeks ago this only happened some of the time. Now it is virtually guaranteed. Occasionally, WiFi just drops, out of the blue, while I'm browsing. I click a link and it starts to load but never finishes. The connection appears to be strong, but it just doesn't work. Usually I reconnect to the network by clicking "Turn Wi-Fi Off" in the menubar. But when this doesn't work, my backup method is to go to Network Preferences and manually reset the IP address. However, sometimes everything in this pane is mysteriously greyed out. I can't reset the IP, turning off WiFi does nothing, and my only option is to log out and/or reboot. I have tolerated this for practically the entire ~6 months I've had this laptop. Occasionally, when it was particularly annoying, I would try to find a fix online. I've tried everything I could find on multiple occasions. Maybe it's been getting worse lately, or maybe it's just my imagination, but these issues are totally driving me nuts. I was more understanding a few months ago, when the computer was brand new and Lion was still just getting started as well. I don't know what the problem is exactly, but I'm assuming it's related to Lion and/or the new MBA hardware... Apple has had more than enough time to come out with a fix. I don't remember ever being this frustrated with a Mac before. If anyone has any ideas please enlighten me. EDIT: Added a screencap of the greyed-out Network Preferences menu. Has anyone else seen anything like this?