Hey all, Without derailing another thread, who is having an issue with their MBA auto dimming itself down to darkness? I work on an external monitor all day (no issues here), then at home (not connected to an external monitor) my screen will dim itself to #2 from #7 (in dark room BTW). I crank it up to 7, and about 3 minutes or less, it's back down again- all this happens right before my eyes and actively working. Before I know it, I am squinting before I realize the screen is dark again. Then, I crank up the brightness and it repeats the dimming. Now, I know I can uncheck the auto brightness box in Sys pref's, but being my 3rd MBA, I see no reason to justify this, as it should work as on my previous machines. That said, I was always running SL, so it may be an OS X issue as I did set up from TM backup. I hate to return this thing; but I am interested if any others are having such issues. The poll is to give me credence on what others are experiencing, or if I have a bad light sensor. Also, should anyone recommend a fix, or test (already did a PRAM and SMC reset) like a bad plist or kext file perhaps... whatever. Many thanks for any suggestions.