Hi there. I just noticed a bug that exists in OpenGoo 1.3.1 (didn't notice if it was there in 1.2 or 1.3 final) -- when I have a task running but paused, it shows up in the 'total task execution time' report as a much larger time than it should be, and that time climbs as I refresh the report. I presume it's calculating from the start time to now, rather than from the start time to the pause time.
Pressing 'complete' on the task resolves the problem, giving me the correct amount of time elapsed.