Comment 7 for bug 1196196

To reproduce this crash, go into gnome background panel and select a new background before the thumbnails have finished loading. I have no idea why the thumbnails are loading really really slowly, however if you wait a while so all images are loaded then selecting a new background does not cause it to crash.

This only happens in 3.6.3, I cannot reproduce is 3.8, however I also can't see any obvious differences in the code that might affect this.