A few months ago the KOReader website was modified to add a new block on the front-page, and ever since then the blocks have wrapped really weird on every browser on all of my computers, regardless of OS. It's been bugging me, so I took a stab at fixing it, and found that if I change the links class CSS to change the display value and specify an explicit width it fixes the problem and looks a lot nicer:
display: inline-block
width: 80%
Anyhow, hopefully this helps and somebody who manages the site can make the change as I think it detracts from the apparent quality of this otherwise awesome program!