Windows 7 refusal to Autorun for USB Flash Drives
Windows Vista and XP’s Autorun have become a hotbed for virus & malware activity, notably the Conficker worm 
spreading primarily via USB flash drives. To stop the spreading, Microsoft said it’s making a change to the default way of how Windows 7 handles USB drives. The first release candidate of Windows 7, which will soon be released, will stop any AutoRun tasks from misleading unsuspecting users into launching the applications.
CDs and DVDs as well as so-called “smart” drives (i.e. U3) that emulate a DVD drive will continue to use AutoRun.
Microsoft also intends to make this update available to Vista and XP users eventually.
