Installed latest fglrx from ati.com like described here http://wiki.cchtml.com/index.php/Ubuntu_Jaunty_Installation_Guide#Installing_the_drivers_manually and no memory leak problem anymore
Installed latest fglrx from ati.com like described here http:// wiki.cchtml. com/index. php/Ubuntu_ Jaunty_ Installation_ Guide#Installin g_the_drivers_ manually and no memory leak problem anymore