Yes I know that ClamAV doesn't ship with the Plesk... However, when I initially set up the server I installed ClamAV and Plesk 7.5.0 and somewhere in that process a system service was setup that executed c:\program files\swsoft\plesk\admin\bin\clamav.exe
Since the ClamAV install didn't know it was going to be used with Plesk I assume that service was setup by Plesk.
Now, when I did the latest upgrade to 7.5.6 and I rebooted the server ClamAV failed to start and when I checked it out c:\program files\swsoft\plesk\admin\bin\clamav.exe wasn't there...
I think it was fair to assume that it was removed by the upgrade...
I have already fixed the ClamAV install...
I just think that which ever programmer made the change that removed c:\program files\swsoft\plesk\admin\bin\clamav.exe should have also removed the service...