• Wall St losses wipe out early FTSE advances
• BT announce drop in revenues
• Survey reveals workers don't take full leave
• NTR-owned Green Plains Renewable Energy records profits surge
• O2 adds 5,200 new customers
• Petroneft to begin production at Siberian well
• Hong Kong and Singapore up
• Hacker shows how to fool cash machines
• BSkyB reports high-def boost
• Dow Jones down