why doesnt the Boot time scan work on Avast pro in
XP Pro 64 Bit edition its just ghosted out ?
i have to do a drive switch to xp to get it to work
Well, unfortunately, (as you figured out) it does not work. We’re investigating possibilities to make it work - although it surely will not be easy… :-\
thanks 
atleast i know now its not just silly old me ! :-[