Hi Jim,
For your security questions, you might want to see our blog post about
Authorization and Encryption.
I'm not sure I understand the delete issue that you're having. What folders are you trying to delete and finding you're not able to? Can you describe the scenario in detail?
As for increased storage, this is definitely a popular request. Though we are unable to say at this point if/how space on your Live Desktop will grow, please do add your vote for additional storage to our
Wish List.
Thanks,
Ben.