Abstract. We conducted a survey on Executable Acceptance Test Driven Development (or: Story Test Driven Development). The results show that there is often a substantial delay between defining an acceptance test and its first successful pass. Therefore, it becomes important for teams to easily be able to distinguish between tasks that were never tackled before and tasks that were already completed but whose tests are now failing again. We then describe our FitClipse tool that extends Fit by maintaining a history of acceptance test results. Based on the history, FitClipse is able to generate reports that show when an acceptance test is suddenly failing again.