With the first false positive I followed instructions from Avast and deleted it and my computer lost all internet. Anyway to cut along story short, I went back to the last restore point and pc worked fine. However when I now right click on this file in the virus chest I cannot restore it. The restore option is faded out. I am scared to delete it because of what happened last time. But because the restore point restored the file, does that mean I can delete it from virus chest.
I mean what happens if I uninstall Avast, where does the stuff in the virus chest go then?
hey. I’m not sure but i think if you uninstall avast every file will go missing even the files in the chest. but I’m not 100% sure on the files in the chest but i can think so.
back to topic 
what file does the boot scan comes up with that is a false threat? if you have the file in the chest you can from there report it as a false threat so avast can correct that.
Yes, I’ve been a good Avast member and done that. So I guess a reinstall is in the works when the next program update/Avast 8 comes along.
You’re right: the chest will be deleted by uninstalling avast.
Never delete a possible malware found. Move it to the chest should be your first choice. The reason why you have seen… 
DJBone
Clean, Quarantine, or Delete?
http://antivirus.about.com/b/2007/03/11/clean-quarantine-or-delete.htm