The installation went flawlessly and then on Day 5 the computer began relentlessly rebooting, but never starting. I spent almost six hours on the phone with MS Vista Support (a surprising pleasant experience). It was necessary to do a fresh installation of Vista. This was not quite as bad as it sounds, my data resides on the D: and E: drives and is backed-up off site and I had accumulated a vast number of programs that needed to be disposed of). I also installed a beefier Video Card (nVidia GeForce 8400 GS). The frequency of crashes went from continuous to every 90 or 120 minutes.
Using the Event Viewer I was able to determine the most frequent cause of the crashes. About half occurred immediately after Google Updater, GUpdate, and Google Earth Add-in would attempt a function. I removed all three items and the crash-frequency was reduced to every two to three hours.
The only new culprit identified was Outlook 2007 (an absolutely essential program which cannot be deleted), There were an enormous number of crashes where the Event Viewer did not appear to have noted any noticeable (to me) reason for the crashes.
When it deigns to work, Vista Ultimate is a significant improvement over XP Pro. It's imperative that I get the crashing fixed before it undermines my confidence in Vista. The zip attached to this post includes a number of items that appeared in the Event Viewer that appeared to have some impact and some Event Log copies.
I really need some advice and I appreciate any suggestions.