When generating a history based on two differnet test runs the graphs gets generated strangely. The starting point of the number of test cases graph get set to the maximum number of test cases instead of zero. This causes the graph to be generated so that it looks upside down. The only time that I have seen this surface is when generating a history where the numbers look like this.
Run-3 ../../reports/reports.scjd/report-20090602-195610 25 25 0 0 2009-06-02 17:56:09 0.422 100.00%
Run-2 ../../reports/reports.scjd/report-20090602-190304 25 25 0 0 2009-06-02 17:03:02 0.608 100.00%
Run-1 ../../reports/reports.scjd/report-20090530-225553 13 11 0 2 2009-05-26 19:39:12 0.390 84.62%
The incorrectly generated graph.