Here's a site I just found...
http://www.truthorfiction.com/rumors...orth-osama.htm
Summary of eRumor:
Oliver North allegedly told a congressional hearing that he had installed a security system in his home because of threats to his family by Osama Bin Laden. Later versions of the story say the person questioning Col. North was Senator Al Gore.
The Truth:
According to the Congressional Record, there was no mention of Osama Bin Laden during the Iran-Contra hearings by Oliver North or anyone else. In fact, there was no mention of Osama Bin Laden in the Congressional Record at all in 1987, the year of the hearings.
Also, Senator Al Gore was not a member of the joint House-Senate Iran-Contra Committee and did not do any of the questioning.
One of the charges against North at that time, however, was his accepting a security system for his home as a gift. He said he needed it because of threats against himself and his family by Palestinian terrorist Abu Nidal.
Paul Bedard whose column WASHINGTON WHISPERS appears on USNEWS.com contacted North who confirmed that he never referenced Bin Laden who, in fact, became a friend of the U.S. against Soviet invaders of Afghanistan.