Ok, you seem pretty high to me for most typical AMD processors I've seen running actually...too close to the average 50C limit.
What brand of thermal grease are you using?
Be sure to use put a very fine and thin layer of grease over your the die of your processor, I would use a straight edge razor blade, a credit card, or something with a straight edge to make sure you get an even layer on it.
Also, how's the ventilation in your computer case?
If you don't have good air flow to help dissipate the heat from your case, then you will experience higher cpu and system temps regardless of how good your heatsink and fan maybe along with the thermal grease.
I would recommed you re-apply some thermal grease again, and make sure you have good air ventilation, probably install some system fans if the air flow is not so good. I've personally shaved close to 10C off my processor temp by simply buying a better computer case that had good air flow and two system fans for in-take and out-take, goes to show how important good casing is.
Hope that helps you lower your cpu temps.