My computer started freezing on its own. I cannot find the reason behind that. But something happened to my system. I checked in Task Manager and found that the audiodg.exe is consuming maximum process. The cpu usage is almost 100% percent. When I terminate that the system went back to normal, but after a few minutes it starts again. It is quiet irritating. I just installed a tool bar and this started happening. Is this a virus. I am using AVG and it did not found anything.