News At Seven-Thirty highlights: 37-year-old man arrested for murder; Man killed in Guangzhou when mobile phone blew up; Hu Jintao held first phone conversation with Obama; Obama pushed 825 billion economic stimulus bill; Spain promised closer ties with China & EU; Landmark provincial elections voting in Iraq; Zimbabwe’s main opposition headed into unity Gov't; 7 Chinese tourists killed in traffic accidentin US; First African-American Republican party leader; North Kowloon Magistracy revitalisation undecided; Standard Chartered Bank will continue hiring; Hiram's Highway expansion met strong opposition; 55,000 runners preparing for Hong Kong Marathon.