I had the same problem with admunch.exe being detected as a trojan. My wife moved the file to the virus chest and I had to reinstall the program this morning. The installation executable Am-install.exe was also flagged as a virus. I submitted the file Admunch.exe to Avast. Admunch is SAFE.. I have been using it since 2003 and as you said, the file hasn't changed in over a month.