The thread "How to get rid of Babylon search for ever?" gave a solution. This includes uninstalling with Control Panel all programs which refer to Babylon. My poiny is: when I try and uninstall '''BabylonObjectInstaller''', I am asked by Windows whether I authorize the program '''C:\Windows\Installer\19f200b7.msi''' from an “'''Unknown Publisher'''” to “'''make change to this computer'''”. So far, I replied "No" and BabylonObjectInstaller, stays in my list of programs. I find ondeed strange that the Windows Uninstall procedure needs to run a program from an "unknown publisher". May I safely run it, or is there a risk that this program is itself part of the virus, and will contaminate even more my computer?.