I am using the latest svn built from source as of today,but have been having this problem since at least build 676. It used to be thumbnails appeared fine on my PS3. Now, no thumbnails. I know the thumbnailer is working because Windows Media Player and the web interface show thumbnails; it is only on the PS3 that no thumbnails appear. What might have changed such that the PS3 is no longer receiving or can no longer render thumbnails?