wierd lines on widescreen naruto shippuuden episodes

[ryujin_yuna]

not a big problem actually, but why are there wierd lines on the right side of the screen on the episodes of Naruto Shippuuden? (episodes 54, 55 & 56 - usually on the widescreen ones), the rest are okay though, btw, i'm using MPC (K-Lite Codec Pack 3.95 Full), anyone here noticed it too?

thanks