Some information of interest

Vista reported that shut down was being delayed by Norton 360 taking 52 seconds to close.

I contacted Symantec Support, they said "problem with earlier versions of Internet Explorer, load IE7"

I contacted them again and asked if Mozilla Firefox (which I use) was supported by Norton. The reply "No, use IE7 if you want Norton protection"

So it looks like Hobson's choice, back to using IE7 for me.