Only gc if thumbing.

scanner/PhotoAlbum.py

@@ -128,11 +128,11 @@ class Photo(object):
 							pass			
 				self._attributes[decoded] = value
 	def _thumbnail(self, image, thumb_path, size, square=False):
-		gc.collect()
 		thumb_path = os.path.join(thumb_path, image_cache(self._path, size, square))
 		print "Thumbing %s" % thumb_path
 		if os.path.exists(thumb_path) and file_mtime(thumb_path) >= self._attributes["DateTimeFile"]:
 			return
+		gc.collect()
 		image = image.copy()
 		if square:
 			if image.size[0] > image.size[1]: