I have a problem in Flash Player versions of Internet Explorer Active-x. When I download here, a avast dialog box appears and says that the "install_flash_player_11_active_x.exe" file has a poor reputation along with a written statement that there is no digital signature. Whether the file is safe to be installed?. You can see the screenshots here.
If you downloaded it from the Adobe website, then it's safe. But already old; the latest version is 11.8.800.175