When I have the inspector open in chrome it will \"break\" all over the javascript even if there are no breakpoints. On sites that I need the debugger to debug javascript th
I eventually resolved this by uninstalling chrome, removing this directory: ~/Library/Application\ Support/Google/Chrome/ (I'm on a mac) and reinstalling. Not sure whether the deleting chrome step is really necessary.
You could have had the "Pause on all exceptions" button enabled (it would be blue if enabled).
See screenshot below:
On Chrome 33.* you'll see it when viewing a script: