A Drupal mask over thumbnails...
http://drupal.org/node/587562
"A strange bug with the last version, ie a span tag wich appears over thumbnails"
It's a slightly scary Druplicon.
AlexUA: "This is a feature, and you can disable it on the main Emfield configuration page."
By the way... the Problem this Update Fixed, and the Drupal Problem-solving Approach
Go to the page of the module that has the problem.