On posts that have attachments I usually see a thumbnail of it, but on others I just see a link to the attachment.

On *my* posts, it is never a thumbnail, just a link to it.

Is that how it is supposed to work?

__________________
1984 300D 398K-daily driver
1998 Honda Accord 102K -wife's daily driver
1991 Volvo 740 289K
2000 Toyota Corolla 143K