. >> and i'm nina del santos at cnn london.elcome back to "world business today." >>> our top story in greece prime minister george papandreou is facing a crucial vote of confidence. if he wins it, greece is likely to receive funding from the imf to avoid defaulting on its debt. however if he loses this vote greece could be headed for financial disaster and if that happens, the imf has warned we could be on our way towards another worldwide financial meltdown. >>> let's take a quick look at top business stories we're covering this hour. walmart dodged a massive class action lawsuit. the suit brought by 1.5 million women alleged they were paid less by the retail giant because of gender. monday the u.s. supreme court ruled the women worked in diverse jobs across the company and did not have enough in common to file a class action suit. >>> football's governing body fifa confirmed its vice president jack warner resigned in the face of a pending ethics investigation. it wished the trinidad-born administrator well and the ethics inv