Shangai Reuters Today in China has filed a Case against hp for the video cards getting overheated damaging the laptops on the whole.Around 100 users of HP are facing the same problem and has gathered today to file the complaint.
But there are many other situations and conversations happening over a quiet a period of time for the overheat problem in HP laptops.HP has also given various improvements and suggestions which could be found in the below link
http://www.hp-laptop-batteries.com/How-to-avoid-laptop-overheat.htm
and also HP laptop batteries were recalled for overheating in many parts of the world
http://news.cnet.com/8301-1001_3-10241137-92.html
But most of the laptop technicians suggest not to place laptop on the leg and place it only on flat surface as it may block the vent.This seems to be a controversy against the device name “laptop” by itself.