MBPr 13" screen flicker problem(?)

[Balckoutgr]

I just notice this on my MBPr 13 .
it happens only at boot .


http://tinypic.com/player.php?v=15rocbp&s=8#.U-Xdz_mSzOU


Is this normal, or should i start to worry?

 

[DJJAZZYJET]

Try a PRAM/NVRAM and SMC reset