I have updated my page and replaced
<link rel="image_src" href="http://www.linosolutions.com/bilder/<?php echo $row_rsNyheter['Hovedbilde']; ?>" />
with
<meta property="og:image" content="http://www.linosolutions.com/bilder/<?php echo $row_rsNyheter['Hovedbilde']; ?>"/>
I'm afraid there is no difference. Unfortunately the image still not appears. I have tested with another Facebook account this time.
I'm attaching a new version of my page.
Regards
Rune