I am getting it too but at least i use a Mac and it wont infect my machine but it does cause messages with long attachments to be sent to me.
For heaves sake, why do people still insist on opening emails with attachaments when they don't know who they are from or waht they are.
If you ever receive email from soemone or an address you don't know and it has an attachment then just delete it. Because fo some prople not bothering with anti virus software or just being too naive and opening every attachment we now have a serious problem with emails being sent and attached to them are the virus/worm and also some other documents off their computer.
Check your email software for viruses and DO NOT OPEN attachments from anyone if you don't know what it is ir have not specifically requested it. Better still, get yourselves a Mac and stop getting attacked by these PC viruses.