During today's malware test (in a virtual machine) I noticed that a rootkit infection put out of function Sonar2 behavior detection .
http://img179.imageshack.us/i/sonar20107.jpg/
in this Picture you can see many Detections but after 9.20AM Sonar2 dont work and do not detect Samples which had previously been detected.
after examining the system I had found the problem , a Rootkit . Combofix show this Infection in the next 2 pictures.
http://img38.imageshack.us/i/96061492.jpg/
http://img10.imageshack.us/i/13265798.jpg/
After cleaning this Machine , Sonar2 works again at 10.15AM .
if you have Problems with Sonar2 , Control your PC on an infection ! ;)