Don't filter content since it caused way too many problems.

wp-facebook-ogp.php

@@ -38,8 +38,8 @@ function wpfbogp_namespace($output) {
 function wpfbogp_find_images() {
 	global $post, $posts;
 
-	// Grab filtered content (so all shorttags are fired) and match first image
-	$content = apply_filters( 'the_content', $post->post_content );
+	// Grab content and match first image
+	$content = $post->post_content;
 	$output = preg_match_all( '/<img.+src=[\'"]([^\'"]+)[\'"].*>/i', $content, $matches );
 
 	// Make sure there was an image that was found, otherwise return false