There is a way to disable auto downloads.
Create a text file and name it mms.cfg
Add the following two entries to the file and resave
AutoUpdateDisable=1
AVHardwareDisable=1
Next Save the file to the following directory;
%windir%\system32\Macromed\Flash
%windir% = windows directory
The file location is for windows 32 bit O/S only; I believe for 64 bit you need to save it to the following directory %windir%\systemwow64\Macromed\Flash; However you still need to confirm the 64 bit directory, its a shot in the dark