Thanks mickjapa108, Dark guy and wondering why.
Norton antivirus had been giving me clean scans so I tried "Spybot search and destroy" and then uploaded AVG free. The first gave me 22 adware warnings and AVG picked up 2 trojans and over 1000 files infected with worms like dllhost exe.
After deleting them and reloading my shared files the problem has been resolved. Makes you wonder why we subscribe to norton dunnit?
Thanks again to all.



He who dies with the most toys wins!