Comment 5 for bug 589433

In nautilus 3.x i had the same problem especially with the thumbnails of music folders. I found a solution using dconf-editor and puting the value of icon-size to 126 in state of 64 (org/gnome/nautilus/icon-view).

I hope this can help : i have almost no space left betwwen my icons (thumbnails) and i love it ;-)