I actually owned this name back in October of 2001. Owned it for all of 3 days. Got it through Snapnames, which registered it through NameScout.
NameScout then deleted it:
As per our terms of service, specifically section 26(2) below, we herby
inform you that we have decided, in our sole discretion, to delete the
domain osamabinladen.org you recently registered with us. As per our terms
of service, you will be issued a full refund for this domain. This deletion
will be carried out forthwith.
I note that you have several other domain with us, and this action will not
affect the other domains you have registered with us.
As you are also a client of one of our affilates, SnapNames, and the domain
in question was registered through them, please contact them concerning your
refund. We have refunded their account for this domain.
Sincerely,
Robert Hall
President
Namescout Corp.
When I contacted NameScout to find out why, they basically took the position that the name would give them a bad reputation. Maybe it was a good thing since I had planned on putting up a site with doctored Osama pictures showing him "in flagrante delicto" with various farm animals.
Good luck with the name!