Just installed the latest build 3.5 .  It’s now got ‘face detection’ in it’s armoury. As I write this it’s matching images of friends and family in a rather an uncanny manner. You don’t have to use but guess it might help if looking for a specific photo.  Download from here: http://picasa.google.co.uk/

Also downloaded Google Maps on my Nokia E71 phone today, another new version 😉 It’s added layers so you can look up information via Wiki for example . Check it out  http://www.google.com/mobile/products/maps.html#p=default