New exploit code spreading automatically to MySpace.com profiles has been reported in the wild. It is reported that the case uses QuickTime .mov video:

neowin.net/index.php?act=view& ...

Link to Neowin Forum thread including sample code and screenshot is here:
neowin.net/forum/index.php?sho ...

Not only bad news. Some anti-virus vendors have protection available:
f-secure.com/weblog/archives/a ...

trendmicro.com/vinfo/virusency ...