Raptor - Undignified & unwelcome speculation. As far as I understand it, people who suicide by overdose take a handful; not one of this, one of that, pick 'n' mix. If he was rational enough to have sat down & worked this out as a method of suicide (& it's highly debatable as to whether anyone would have the pharmaceutical knowledge to be sure that it'd work), he was far too rational to have done it deliberately. In my limited knowledge of suicides (dead & living), if they don't actually want everyone to know they've done it, they're certainly not trying to conceal it, which is what you're implying.

A man's dead. Please don't use his death to bang some drum that interests you. You may well have a point. This isn't the thread for it, & suggesting that Heath Ledger was a deliberate suicide is unsupported by any factual evidence at this point in time.