I got some errors in my PhP error log. It look like that:

[24-Aug-2006 10:38:34] PHP Notice: Undefined variable: last_angle in .../UniAdmin/pieChart.php on line 68
[24-Aug-2006 10:38:34] PHP Notice: Undefined variable: last_angle in .../UniAdmin/pieChart.php on line 69
[24-Aug-2006 10:38:34] PHP Notice: Undefined variable: last_angle in .../UniAdmin/pieChart.php on line 70

Thanks for your infos...