New answers tagged hang
The problem was solved by replacing the logic board. I went to a local merchant who complies with Apple, and they told me they will replace it for free. After being pressed by its customers (in US) who were complaining for this issue and even sued the company, Apple filed an issue for free replacements during the last five years. More info here and here
The problem may be due to SafeSleep, which is enabled by default on Macbooks and causes the laptop to write out the RAM to disk when put to sleep. Try turning off SafeSleep and see if that helps. My 2011 Macbook Pro started hanging occasionally when closing the lid after I upgraded to 8GB RAM, and turning off SafeSleep seems to have stopped it. ...
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