A computer system and method inhibit interruption of a user that is actively using the computer system. A user is actively using the computer system if the user has provided defined input within a time period specified in a “do not disturb” specification. For example, if the time period in the “do not disturb” specification is set to ten seconds, a user will not be interrupted by a potential interrupting event if the user has, for example, pressed a keyboard key or clicked a mouse key within ten seconds of the potential interrupting event. In this manner a user that is actively using a computer system will not be interrupted by potential interrupting events. In a first embodiment, the do not disturb mechanism is defined globally in the operating system. In a second embodiment, each software application may include a “do not disturb” specification.