The turnover bug that bit the hard at the beginning of the season apparently wasnt fully exterminated.The Vikings sure felt the sting in on Sunday night.Due in large part to three giveaways the Broncos converted into field goals, the Vikings saw their five-game winning streak end in excruciating fashion with a 21-20 lo s."Weve learned this le son before," said coach Kevin OConnell, sounding as...