I am receiving the following error message on one of our pages:

Notice: Undefined index: description in theme_imagefield_image_imagecache_lightbox2() (line 163 of /var/aegir/platforms/pressflow-6.22-live/sites/all/modules/lightbox2/lightbox2.formatter.inc).

I noticed that there were similar issues that have been fixed, but they were related to the dev release of lightbox. I've managed to suppress the warnings by changing line 163 to:

if(isset($item_data['description'])) $image_title = $item_data['description'];

I'm fairly new to Drupal, so not sure if this issue is specific to my installation, or whether it warrants a patch etc.