There is nothing "wrong"with 1024 width there is just some odd conflict somewhere for some of us.It has been my understanding that the 1024 width should be just fine.
OH! Would that it were that easy! Getting an X100 now wouldmean sacrificing my K-5 and although I keep mumbling about maybe selling off all my Pentax gear... I'm not quite there yetNo issues with Chrome, Firefox or Safari on either of my Mac's.
It may be that the image was posted to large and maybe this could cause a stretch.
Maybe you should get an X100 so you can figure this out.