I reset the settings as you indicated and still have the same problem. I start experimenting and found that this only occurs when using Firefox (I have the current version). It works fine in IE 7. To give you an example that happened tonight, I was downloading a tax form from the IRS (http://www.irs.gov/formspubs/index.html?portlet=1). After I select a form and retrieve it, I get the ZA window we've been talking about. Again, though, it only happens in Firefox, not IE7.