As of today download of (static) PDF-files from our site stopped working in IE 8 and IE 7 from several computers. This seems to apply to most PDF-files on the internet as well. (I did a Google search for "download whitepaper pdf" and tried to download a bunch of them.) It works great in Chrome and when using Fiddler2 to eavesdrop on what's being sent I see that the file is transferred. It seems like there's some sort of filter that got triggered today, any ideas?
Server: Windows 2008 Server with IIS 7
Client: I replicated this on Windows 7 With IE 8