Please do not worry about all the blocks - as I said that is Norton Tamper Protection doing ti's job. Telling us about them will not stop them, nor is there anything we can do with the logs from them. That said, I can suggest you quit spending so much time looking thru your History as I have done with other users. Staying out of your History and seeing the Green Checkmark makes for a much less stressful computing experience.
The downloads shold show as separate entires (files) on your USB Drive.
It appears all is running fine at the moment - if all the scans are working, LiveUpdate is running smoothly and youhave the green checkmark, I see no need in doing anything to try a fresh start.
At this point I would suggest just letting it run (without sleep) to see if it makes a difference. If not then let it sleep and see if all is still OK.
plese come back and let us know if sleep has an impact.