I think my friend Karah posted these stat's before, but I'm gonna hit you with some deja vu.......the answer to the above question....
No.  Period not one single case, not ever. THC is one of the few chemicals for which there is no known toxic amount.   The federal agency NIDA says that autopsies reveal that 75 people per year are high on marijuana when they die: this does not mean that marijuana caused or was even a factor in their deaths. The chart below compares the number of deaths attributable to selected substances in a typical year:

Tobacco...............................340,000 - 395,000
Alcohol (excluding crime/accidents).............125,000+
Drug Overdose (prescription)............24,000 - 27,000
Drug Overdose (illegal)...................3,800 - 5,200
Marijuana.............................................0

I’m all for the eradiacation of harmful drugs but since I know that is an impossible thought much less task, then my group “  Weed: The Other Green Veggie”  and the “Let's do our fight against drugs ... Drugs kill” group will agree to disagree by posting facts that substantiate their dislike for an earth grown product that has done more good for mankind than let’s say Tylenol and Advil.  Let the post if there are any be tasteful and spell checked and please know that is OK to have an opinion just as long as you don’t try to ram down people’s bloody throat. Oh and I'm a little pissed cause one of my favorite DAPS just up and vanished like a fart in the wind.....