in which browser and what point you got crash? Also please provide the crash logs for the flash player.
Firefox crash can come at anytime and I'm not sure what all is running
Do not know how to get logs
When flash player crashes it gives the option to collect the crash logs at the same time.
Please make sure you have latest versions of flash player installed. Please visit the site and install flash player http://get.adobe.com/flashplayer/?promoid=KEWEI
You must have administrator privileges while installing flash player.