MotorcycleNews.com link to the story David Jeffries died after a losing control of his TAS Suzuki GSXR-1000. It is believed ( but not confirmed ) that there was oil on the course that was sprayed by another bike.
Jeffries has set many records at the Isle of Mann in several classes of bikes including the fast laptime ever on the ~37 mile course.
Here's to his family...
--JamesT