Dutch star Irene Schouten lived up to her top billing again to complete a 3,000 and 5,000 metres Olympic speed skating double at the Beijing Games on Thursday. Unbeaten all season, Schouten smashed the 20-year-old Olympic record from German Claudia Pechstein by 3.40 seconds in her 5,000m triumph in 6 minutes 43.51 seconds. Canada’s Isabelle Weidemann added silver to 3,000m bronze 4.67 seconds behind, having skated ahead of Schouten in the fifth of six pairs. Czech veteran Martina Sablikova got bronze over the distance she won twice at the Olympics and nine times at world championships, 6.58 se…