Sorry about your colleague's experience, but from my understanding of how Dropbox works even with old clients this shouldn't happen. Are you sure your friend ha

Sorry about your colleague's experience, but from my understanding of how Dropbox works even with old clients this shouldn't happen. Are you sure your friend hadn't deleted the contents of his Dropbox folder on that system and then turned the client back on later? That would definitely explain this. It'd be great to have your friend weigh in.