Mark, 115 F. or 46 C. is not too hot - but...
You didn't say what kind of load you're running with this temp. If you're idling or running a low to medium load then, obviously, a heavy load is going to result in your temps being dangerously high if not too high.
To give you an idea, at idle, my temperature is around 29 C. or 30 C. With a medium load, my temperature range is in the mid to high 30's. With a heavy load, my temperature hasn't gone above 45 C.