An AVG scan just revealed trojan virus downloader.vb.4.p but AVG said it could not be moved to the vault or repaired. A second AVG scan showed no virus but when I did a search (via the 'find' facility) the virus was still in the temporary internet folder. I manually deleted it but as AVG didn't show it on the second scan I am concerned whether it has actually gone. And whether it left anything behind!!!