After reading this Thread over and over. Trying to decide weather or not to risk future issues with my BB, I went ahead and upgraded my BB Pearl 8100 os from 4.2 to 4.5.0.81 and despite having to wait 20or so minutes for reboot everything went well. nO PROBLEMS YET (FINGERS CROSSED) . THANKS EVERY ONE FOR ALL THE GREAT RESOURCES. This is a great site.
PEACE FROM THE M/P/L/S....