Stock futures edge down ahead of payrolls By: MarketWatch October 07, 2011 at 06:03 AM EDT U.S. stock futures slip ahead of crucial data on U.S. jobs, while shares in Illumina tumble in premarket trading. Read More >> Related Stocks: Illumina Inc Lloyds Banking Group Plc ADR Royal Bank Scotland Group Plc Servicesrce Intl Inc Verizon Communications