feb27_HB0: http://cmsonline.cern.ch/cms-elog/1079804 mar1_HB0: http://cmsonline.cern.ch/cms-elog/1079858, http://cmsonline.cern.ch/cms-elog/1079901, http://cmsonline.cern.ch/cms-elog/1079903 mar4_HB: http://cmsonline.cern.ch/cms-elog/1079936 mar4_HB0: http://cmsonline.cern.ch/cms-elog/1079974