This was by design to prevent the selection of all rows from the table, i.e., a way to optimize an ORDER BY RAND() query without grabbing all the rows. The downside, especially for small galleries, is that sometimes no random thumbnails show. As you currently have a small gallery, remove the following from the query in the PhotoPlog Forum Home Thumbs plugin, but as the gallery gets bigger, you should put it back:
Code:
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