You're a braver person than I then. I wouldn't download HIPAA data to a machine with Dropbox on it, anymore than I would be downloading protected research data to such a machine. But then, I'm not a doctor so I don't deal with one-off patient info, so it's easy for me to maintain separation.

Though if this is actually a thing that many people want to do, perhaps the new Blackberry OS actually does something that people need...