Support may need to chmod your albums and images folders back to your user-id & group. This is because when they were created before phpsuexec they had the user-id & group of nobody.
Please post a support ticket to get these changes made if your Gallery is not functioning properly.
http://codex.gallery2.org/index.php/Gallery2:Security:
If PHP is run under your user, we can remove all filesystems for other users. * Set the permissions of config.php to 400 (read permission for the owner/you, no permissions for anyone else). * Set the permissions of g2data to 700 (read+write+execute permissions for owner/you, no permissions for anyone else). Apply the permissions recursively (also for all subfolder, files, ...). * In G2 site admin -> general, set the permissions for new directories to 700 and the permissions for new files to 600.