I installed 21 yesterday and I seen that I was using 1.5 g of ram. I didn't have anything running but the os it self I have a Dell I7 3.9 g and 8 g of ram . Has anyone else ham this problem and no how to fix it . When I opened my mail and open Firefox  I go up to 3.6g of ram . All the fans pick up to pull the heat off like they should 

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