Hi umesh,
Today I tested a software in CCAV sandbox. I installed it and run it in sandbox. (
http://www.mp3jam.org/)
I used the software in sandbox with no problem

But I decided to refresh sandbox.
I clicked to "Clean Sandbox" and the windows is freezed. I can use my other softwares but CCAV is completely freezed. I cannot close CCAV processes in task manager (CCAV doesn't allow this

) I have to restart my computer.
I tried to clan sandbox again and the freeze appears, again

Please try my steps above, my system is Windows 7 SP1 64bit, fully updated.
Thanks,
yigido