Another thing to watch for is slow boots after removing Norton products. I ran the removal tool 3 times on my Vista machine. I was getting boots over 2 minutes. I turned on boot logging. Turned out the system was timing out on
driver loads for Norton that were no longer on the drive. Waiting for
drivers that had been removed.
If you see any
driver load fails in the boot log that weren't successfully loaded on another attempt, then search the registry to see where they are being loaded, or try CCleaner to see if it gets them. Once I deleted those
driver loads it cut down my boot time by about a third.