Tempurpedic Cloud softening over time--how much is too much?							
			
					| I bought a Tempurpedic Cloud in June and loved it from the beginning.  It felt awesome on my back.  I didn't feel like it needed "breaking in." 
 Recently (so about eight months later), it has felt appreciably softer, and there's a little of the hammock effect. It's not huge, but it seems significant for just eight months. Is this typical breaking in or is this abnormal sag? 
 I spun the mattress around (it's a Queen, so there's room) and it's nice and hard and firm again, so it's not my imagination. 
 If it's not going to get any worse, then I'm fine, but if this is a defective, overly saggy mattress, I need to return it. What is your experience? Thanks so much! | 
