Many will be amazed to learn of OBLs "vaporization" over a year ago up in the Mountains of ToraBora. The AlQeada-Taliban were not about to announce the vaporization of their leader. Thus he exists only in the memory and in the deeds of his fellow thought-travelers.
The revered OBL is dead, finis, a martyr. His Islam shall rule the World is still very much alive.
UBL is not dead - He is very much alive and being hunted - (as is Zarqawi, Mullah Omar and Zawahiri) - UBL has not only put out quite a few audio's but put out a full 55 minute video last October just before the US Election (discussing it in detail - UBL didn't have a clue who John Kerry was in 2001).