As bad as SuxNews programs have been all week, we may look back on them fondly after the newscasts this evening. If, as has been the case the past two weeks, the embarrassingly under-qualified Nadia Singh is anchoring, we could be in for a real treat.Even before the big switch, Singh's Friday 'casts were riddled with miscues and dead air. Add all the new "software problems" that have plagued the