An Emarati man talks on his mobile phone at the Dubai Financial Market in Dubai, United Arab Emirates, Monday, Nov. 30, 2009. Dubai's main stock exchange dropped more than 7 percent and Abu Dhabi markets slid more than 8 percent on the first day of trading since officials went public with the city-state's huge debt crisis. (AP Photo/Kamran Jebreili)AP - The heavily indebted Dubai World is not guaranteed by the emirate's government, a top financial official from the city state said Monday, offering little direction to anxious investors on a day when the United Arab Emirates registered a record fall on the back of Dubai's debt mess.