Looks like temps are okay now and have been for about 2 1/2 days.
There are no media files on the card - they all come from our server. All audio files were previously analyzed on the server so I doubt that was the problem. But it sure could have been thumbnail creation. The server has about 8,300 audio files, 63,000 image files and 700 video files.
At Jim's suggestion I looked for ways to turn off thumbnail creation and could only find two settings. One would enable video file creation and that was off. The other is a low, medium and high setting for thumbnail threading. It was on low. Are there others?
Astromo - Thanks for the tip on the heat-sink. There already are two small metal finned heat-sinks installed. I wonder if the one you linked might be more efficient? There are also aluminum cases available that apparently provide good heat dissipation but I had hoped to avoid that.
Cheers,
Rod