I just got my Transformer today from Walmart.com, and also experiencing light leakage. Not sure if this is normal or not. I notice it mostly when brightness is turned up with something dark on screen. I only have the light leakage on the bottom of the display in two spots to the right of the center. Attached a picture.
To the guy with the RMA, I'd honestly return it for a refund and try and re-buy it rather than mess with an RMA to Asus. Like you said, they do seem kinda shady with RMA's. Might want to use nowinstock.net to find a replacement. My phone has been blowing up with txt alerts like crazy the last day or two. Seems a lot of places are getting shipments now.
It's only been one day for me, gonna give it a week, if this light leak absolutely drives me crazy (OCD), I'll probably return it and try and get another one when Walmart gets more. Can't beat their return policy, 90 days to return.