In my case, after 15 minutes I have a bad "ghosting" and it took more than 15 minutes to go away after screen saver starts. This issue doesn't appear in my Apple Cinema and Thunderbolt Displays ( I have both).
My Retina MBP is 15 months older and apple warranty has expired.
Never thought this could happen in a a US$ 3000.00 laptop, I expect a screen should last more than just 15 months.
Retina MBP 15
768SSD
16GBRAM
MacBook Pro with Retina display, OS X Mavericks (10.9.1), 768 SSD / 16GB RAM