My guess is flash is checking for an update.
Copy the following lines into a text file and save the file and name it mms.cfg
AutoUpdateDisable=1
SilentAutoUpdateEnable=0
AVHardwareDisable=0
ProtectedMode=1
For 32 bit users copy the file to the following location
%windir%\system32\Macromed\Flash
For 64 bit users copy the file to the following location
%windir%\sysWOW64\Macromed\Flash