We recently rolled out IE 9 to all our users and now when they go to open a PDF from WA 9, they are prompted to open or save the document (and no option to remember which was chosen).

I believe this is an IE 9 security feature, but I'm trying to determine if there's a way to disable it for just documents opened from our WA server.

My IT guys have found a registry hack to prevent the message, but it seems to be a global change that could weaken our security position.

Has anyone found a solution to this without disabling the security feature entirely?