Going to 2.4.7 with the last gtk2 update was a bad idea, since that version of GTK+ contained a brown paperbag bug corrupting thumbnails in nautilus. The gtk2-2.4.7-2.6 package which is available for testing now should fix that. Please test and report problems in https://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=132836 Matthias