Genius plugin that does exactly as stated and is just absolutely magic when you try to find out why all of a sudden your server went to shit after installing new plugins. It also enables you to try and get a developer to find a workaround aka add compability!
This is a must have for plugin developers trying to find out what other plugin cancelled an event! You will probably not need this as a normal server admin, but if some plugin developer asks you to install this for debugging, it's awesome! I rate this 7/5 stars :)