SQL Error showing Block for Tags

Adding a box for max. 10 entries ordered by number of links, showing tags will result in an error:

user warning: Invalid use of group function query: SELECT dt.name AS description, du.user, dl.href, COUNT(*) AS num FROM delicious_link dl LEFT JOIN delicious_tag dt ON dl.lid = dt.lid LEFT JOIN delicious_user du ON dl.uid=du.uid LEFT JOIN users u ON dl.uid = u.uid WHERE (1) GROUP BY dt.name, du.user, dl.href ORDER BY COUNT(*) DESC, dl.linktime DESC LIMIT 0, 11 in /home/hard/rzfs-uy/uyhc/.public_html/includes/database.mysql.inc on line 173.