Memory leak in JS7 Controller branch 2.5

Current Situation

In a Controller cluster without user inventory the memory is eaten. Approximately 1,5 MB per day. Memory consumption is stable for about 5 minutes. Then memory will be eaten (~50kb). The Controller crashes after 18 hours.

Command to measure memory consumption (memory usage will displayed with column MU):

#/bin/bash
jstat -gc `cat /home/controller/var/logs/controller.pid` 60000 | gawk '{print strftime("%m/%d/%Y %H:%M:%S"), $0; fflush()}' >> /home/cont_m_jstat.txt

Desired Behavior

No memory should be eaten by the Controller.