My computer sent an email to about 50 people yesterday with an attached zip file. The email had no subject, and the zip file contained about 20GB worth of documents off my computer. Most of the recipients are not in my addressbook, but all were people whom I have emailed before. The name of the attachment ends with documents-1-1.mailhold.zip. Does anyone know what cause be email to get sent? Was this a virus, a Trojan, or something else? Thanks for the help.