The Big Taint thread

[Torhal]

Taint means "user code touched this" which then taints the rest of that codepath. You didn't touch the action buttons directly, but you (or someone else - the taint reporting isn't always foolproof) tainted part of the Blizzard code which at some point calls the action button code. That's why there's a stack track in the "action blocked" report; you trace back and hopefully discover where things went pear-shaped.