Ok everyone,just got back from work,And had a good conversation with sony tech.Right here goes.lcd tech can be coheasive with backlight problems,due to the way lcd works,and as such sony do not see this as a fault,but the manner that lcds work,If you run a lcd at full pelt you can see patched or in some cases image retention,when powering up a lcd it will get warmer,picture blur will fade,as well as judder,if you tweek the settings then when the set is warmer it will improve,and any clouding will fade providing you tweek the settings.if you will leave settings on vivid you are running the tv at full steam,And thats not good at all.This is why sony launched the shop or home settings on the tv start up menus.so with that in mind we done a test at work-we turned the store lights off with our shutters down,put tv,s set on vivid mode(all flat out)run a blu-ray 200hz test disc,the picture was garish to say the least and when on vivd noted very slight patching.When tvs were set on custom or standerd the picture was more lifelike.this test ran for 3 hours,lol and helped us sell more tvs,cust love the demos we gave.if anyone wants to try the following setting how we set up in homes i will post these setting.hope this helps everyone.