How is this possible? My friend has a macbook and wireless internet at her house. She is not connected to any network of any sort. Her computer froze. When she restarted it was slow to start. When it did re start she discovered a new pdf file on her desktop that had not been there previously. Upon further inspection it turned out to be a highly confidential legal document an affidavit of a friend of hers messy divorce! Is this even possible? It seems it wasn't emailed. It is HIGHLY unlikely that anyone else has used her computer. Any ideas greatly appreciated!