Is it possible to control what type of Growl notifications are displayed by Chax?
Growl notification preferences are controlled by the Growl preference pane. You can select what types of notifications to see by going to the Growl preference pane, clicking on the Applications tab, and then double-clicking on Chax in the list. A Notifications tab will appear, allowing you to select different options for each type of notification, including whether or not it is displayed.