Do you recognize this phone number? You can try listening to it (I haven't heard it yet) -- open the attachment.
You received the attached voice mail on Thursday, October 28, 2010 at 10:41 AM >From a caller whose caller ID was: 408-414-7168 This message was left in mailbox [53850] my-Oakland-voicemail-number MsgRef[1011-53850:14928736] Thank you for using our voice mail system. DO NOT REPLY TO THIS E-MAIL. You must use the information in the voice message to determine to whom to reply. By replying to this e-mail you are simply replying to the messaging service and not to the individual who left you the original voice message.