>I hope all works well for you. One of the main problems I had was I could not open any of my .NET projects. ZA 5 was doing something to IIS. And I read on their message board that I was not alone. Actually someone there posted a list of problems. But perhaps ZA 5 works fine on some PCs.

Although I experienced no crashes, freeze-ups, or BSODs with ZA 5, I had not tried IIS under ZA 5 until reading your message. I now find there is at least one IIS-related problem: PDFs do not display in the browser when they're pulled from localhost via http. Things go back to normal when ZA 5 is turned off, so it looks like that's the cause. Thanks for the heads up - I may be reverting to ZA 4 after all.