I was having probems with my Misty Look theme with NextGEN installed (Page tabs disappearing behind header image). I deleted my galleries/albums and then uninstalled through NextGEN before deactivating and deleting the plugin. However I had the message that unistall was unable to completely remove nextgen-gallery/nggallery.php. I notice there is a NextGEN folder will files in my WP plugin folder. Is it alright to delete this now?