Received this email today with a zip attachment - don't open it is my suggestion as it contains a .exe file
Dear Customer,
TICKET NUMBER / 3 599 1371813184 3
SEAT / 73A/ZONE 3
DATE / TIME 27 OCTOBER, 2012, 10:56 AM
ARRIVING / Oakland
FORM OF PAYMENT / CC
TOTAL PRICE / 390.90 USD
REF / EF8102 ST / OK
BAG / 5PC
Your bought ticket is attached.
You can print your ticket.
Thank you for your attention.
American Airlines.
I would think a trojan.
Yep, afraid so. See here;
http://www.mcbsys.com/blog/2011/11/new-airline-ticket-virus-email/
Blimey, I haven't seen any emails like that for a long time. I used to get at least 4 a week at one point. I honestly can't remember the last time I saw one :)