Taliban insurgents said Tuesday they had told mobile phone operators to shut down their networks during the day in the Ghazni province, southwest of Kabul, saying signals help track insurgent fighters.The warning comes on top of a Taliban order earlier this year for phone operators to turn off their networks throughout the country at night.To read this Reuters article in full, see uk.reuters.com/article/internetNews/idUKTRE49K3OR20081021.