I found a possible solution but I dont assume it will be a permanent fix.
I went into the manage-gallery.php file and changed
$start = ( $_GET[‘paged’] – 1 ) * 25;
$gallerylist = $nggdb->find_all_galleries(‘gid’, ‘asc’, TRUE, 25, $start);
to:
$start = ( $_GET[‘paged’] – 1 ) * 100;
$gallerylist = $nggdb->find_all_galleries(‘gid’, ‘asc’, TRUE, 100, $start);
Now the manage gallery page will show up to 100 galleries, not efficient if you have alot of image galleries.
I hope someone has a better answer.