Over 20% (101 cases) of the Florida theme park lawsuits involved claims for a personal injury that was caused by a ride or attraction, including serious health problems like spinal injury, heart attack, stroke and death.
Florida theme parks are exempt under state law from state inspections and mandatory reporting, unless the injury results in death or immediate hospitalization of over 24 hours. The Sentinal found that only 9 of the 101 theme park ride lawsuits filed had been reported by the three companies as accidents.
Interesting article. It seems that most of the people that attempt to sue theme parks end up getting settlements. Oh yeah, it also cites Mission:Space as Disney's most dangerous attraction.