As3 Practises : use TheMiner do as3 project swf performance profile , find memory leak!

The second and most universal way is to launch it from the mm.cfg file
TheMiner.swf must be trusted
1: Add TheMiner.swf to your Flash Global Security Settings
2: Add TheMiner.swf as PreloadSWF in mm.cfg 
The mm.cfg file is always located in your %homedrive%/%homepath% If it's not there, you can just create it in that folder. 
(Most of the time it's something like: C:\Users\ProfileName\mm.cfg

Add this to mm.cfg : PreloadSWF=C:\YOUR_PATH\TheMiner.swf