hey, i have a similar problem… but not entirely:
i get the same “no thumbnails”, but the thumbnail.jpg files are all in place like they should be.
I think it has sth to do with the server setup which has changed, i’m hosted by mediatemple and they recently moved all shared servers to grid servers. but i’m a total newbie on server stuff and databases, so i don’t even know where to start looking.
my newly uploaded images are fine, they all have a thumbnail, it’s just that all my previous images (uploaded before the hosting upgrade) have lost their link to the thumbnails (even though the thumbnail files are still there. before the transfer all thumbnails worked fine.
where should i start looking? is it a DB issue? is there some sort of “re-link thumbnails” command in WP?
thanks for any help,