Nope they're not, but a new virus going around would like you to believe that they are. The W32.Dumaru@mm has been hitting Marcy's inbox like crazy the last couple of days. Whatever you do, do not install the virus. This one does require the user to run the attachment for the virus to work, but the e-mail states that it is from email@example.com and tells you to apply the patch immediately. If you are infected (if you have Marcy in your address book you may be), or have run the supposed "patch", you can download the removal tool.