on ur pc .. go to "All Programs", then "Accesories", then "System Tools", then "System Restore" .. follow the prompts ..
under "Control Panel", go to "Flash Player", open it, go to "Advanced", then see under updates where you can set your Flash Player to NOT auto-update .. perform this function after you have installed the previous version of Flash Player .. ver 11.3.268 i believe .. i use ver 10.3 still .. never had any problems .. ever