US consumer confidence fell to a record low in October, under pressure from the global financial crisis, home repossessions and company lay-offs of workers.   The Conference Board said its monthly consumer confidence index fell to 38, down from a revised 61.4 in September and below analysts' expectations of 52. This is its lowest level since the board began tracking consumer sentiment in 1967.    The Conference Board conducts a survey of 5,000 US households to gauge consumer spending, which accounts for two-thirds of the US economy.