[other] Best linux programming notebook?

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http://ubuntuforums.org – I'm looking for an ideal laptop for programming on linux. I currently have an old Thinkpad T400 (poor display, but awesome keyboard) and an Alienware M17x-R2 (good performance, incredible screen RGBLED 1920x1200, but gets really hot on linux even though fans are constantly running, you can feel the heat on the keyboard and its uncomfortable - probably related to AMD graphics). I am looking for a laptop with a good linux support, good battery life, and a very high-resolution display (1920x1080?). I also want the size to be fairly compact from 13" to 15" (fairly light too). I want this (Hardware)