All I can think of at the moment:
1. Locate the download manager that you want to uninstall, right click on it, and view the properties. See if the write permission is enabled for your admin account.
2. Check if the download manager works in the background; check the running processes in the Windows Task Manager.
3. Check your security software's settings to see if they may interfere with uninstalling it.
4. I don't know which download manager you are referring to, but sometimes there are uninstallers available on the manufacturer's website, or specific recommendations in the FAQ or Troubleshooting area.
5. According to this troubleshooting article from Microsoft, you might also try to uninstall it in safe mode: http://windowshelp.microsoft.com/Windows/e...8069f51033.mspx
6. You could also try Revo Uninstaller: http://www.revouninstaller.com/
Edited by Mysterysgames, 11 August 2009 - 03:47 AM.