After a 'emerge gnome', most of gnome functions properly except that the pixbuf loaders (in particular libpixbufloader-png.so) aren't in the LD_PATH (they're installed under /usr/lib/gdk-pixbuf/loaders). Because of this, when gnome is started, no images or icons are loaded. 'emerge gdk-pixbuf' alone doesn't fix the problem either. I'm using Gentoo Linux 1.0RC6 r15 and gdk-pixbuf 0.16.0-r1.
Theoretically, the loaders should need to be in the LD_PATH. Strange. Is there any more information you could give us or digging you could do on your end? Do you know what program in particular isn't able to find the loader? Things are supposed to link against libgdk_pixbuf which handles interacting with the loaders, at least from my understanding.
Azarah has hacked our gdk-pixbuf ebuild to install the loaders correctly. The alternative fix was to emerge gdk-pixbuf twice, but that's fixed now.
