Q: Does your Web site start downloads that are not initiated by the user?
A: File downloads are blocked in the following cases:
* A Web site attempting to navigate to a resource.
* Navigation that would result in the display of a file download dialog box.
* A user not initiating navigation with a mouse click or key press.
To correct this, make all downloads the result of a user-init
http://msdn.microsoft.com/asp.net/us...p2websites.asp
Guess the dialers and autodialers and active X scripts are fucked