I believe the majority of the donors have committed and have given what they pledged in Washington in 2004. Probably the United States and Canada have been the first to disburse the money and to support the new interim government. The banks, the IDB--the Inter-American Development Bank--and the World Bank, maybe were not so fast because probably they needed more time to design their new program and to be able to disburse.
On June 21st, 2006. See this statement in context.