Yes, Toddler Lock is great since it blocks access to other functions. It's better then Zoodles at 6 months for sure. I don't love Zoodles because of the extra fee content that kids try to use but they can't until you pay.
I love the new design! It looks slick and clean!
When you try to check your voicemail you may get "your call cannot be completed as dialed" or nothing at all based on a number of times I tried."
Have you considered writing to a virtual disk file of some kind? You could create your own "disk" file and write to it any way you want. You just need to create your own virtual controller and disk format - though you could probably come up with some open source tools from something like Xen or Bochs to help you.
I don't know that this would be easier but it may not be harder and it could be free. If you do manage to get it to work this way you'll have the advantage of not being locked down to any specific hardware.
In less than one year Google made Chrome faster and more secure than Microsoft was able to make IE since they bought NCSA Mosaic many years ago. Firefox is a great browser but it's still not as fast as Chrome and Chrome has been proven more secure - I'm sure due to its application virtualization technology.
It wouldn't surprise me if Google has a better (faster, more secure, does what most people need) OS than Microsoft or Apple in a year or two.
I wonder if Microsoft will switch to Chrome OS or OSX?