Hi,
When you run a virus scan, it will run faster in Safe Mode.
As far as leaving found viruses in the Virus Vault, I always delete them by opening Virus Vault, then using Action, Empty Vault.
After two years of using AVG now, I have never had any come back, and have never had a problem as a result of it. Just another opinion.
If you wish more info on the Virus Vault, here is a link for further explanations:
http://forum.grisoft.cz/freeforum/re...?4,41284,41284
I do wish you the very best.