What version of IE are they using? I have live update (which means that I get all the most recent MS updates automatically) and the most recent full release version of IE (IE 6). I get no such warning unless I run the script (or any other) locally.
Either this is something new in MS's beta 7 browser (which not too many folks should be using, though many are, and which is not an update, but rather an adventuresome choice you can decline simply by not seeking it out) or, you are jumping to conclusions about why there has been a drop off in calls. Or, you or someone has installed active x controls to the site.
But, navigating away from the page to another local page, or including another local page on it via a frame or an iframe can be problematical if said page does not also have 'the mark of the web' on it.
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