I"m getting an error in the event log: The shadow copies of volume C: were aborted because the shadow copy storage could not grow due to a user imposed limit. Which prompts me to ask: What is this shadow copy thing? Why do I want it? What does it do FOR me? I rummaged about the Internet but although I can find a lot of things that talk about backup and restore, I'm not finding much about what the thing is, why it's giving me this error, etc..... So, what's up with this?