hi, I mean this is not a bug, so not need to be fixed.
about the dulplicate thumbnails, I can not find it here http://photography.31square.com.my/portfolio/. please repeate this issue you mentioned, so I can check with it.
hi, I have found your portfolio page are random content items every time when refresh. I guess that is why page will show duplicate items when load new items. please manage query posts with persist items.