PDF text gets distorted in Retina Preview

Hi

I dont know if its only me experiencing this, but on my new 13" Retina Macbook Pro lines of text in a PDF document get distorted as I scroll down while reading the document.

I attach some screenshots to illustrate what I mean. It is very irritating to me, and bothers my reading. Is it a problem in my computer or is it a common problem with the Retina Macbooks? Thanks a lot for any help

And And finally a photo when it is not distorted, but normal:

On the first picture, lines 2, 7, 10, 12 and 13 are somehow distorted. In its the second part lines 1 and 5.

On the second picture, line 2, 7, 8 and 10 are distorted.

On the third picture there's no distortion.

Although, when I select the lines in Preview, they temporarily get fixed, until I start scrolling again, and then other lines get the same distortion. :S

Lastly, I only experience this problem when reading a PDF in either Preview or other PDF readers, but not in case of reading the PDF in Safari.

Is it a problem with my computer?