No idea Dave but I'll move it to computers & technology and you might get more help
dave i've got the s3 also have a look at this it may be of use:
http://www.androidanalyse.com/galaxy-s3-tip-dont-sync-your-web-albums/
http://blog.gadgethelpline.com/remove-unwanted-picasa-albums-samsung-galaxy-siii/
glad you got it sorted