Ok, that sounds more reasonable. (for some reason I missed the word Dragon in your first post) The good news is that that's the best of the Orbs. The bad news is that while it performs acceptably at stock speeds, it's not going to stand up well to overclocking.
As for the reviews you posted, let me point some things out. Most of the review compare it to only a limited range of heatsinks, and not generally the best ones. One review only compares it to other Orbs. They rightly conclude that it is the best Orb. One of the reviews you posted actually says that it doesn't recommend it. I'd take a look at the reviews on the front page here and also look at the heatsink roundup at anandtech.com. Dansdata.com also has a broad comparison group.
But that's all water under the bridge. It's what you've got. Your choices are either to try to get the best performance you can with it, or you can replace it with something else. Personally I'd live with it for a bit until you run into a wall. There are always better heatsinks coming out and if you're just starting on overclocking, this one may do for a bit. Once you get going you'll have a better idea of what you want, and a chance to save for it if you need to. For the record, you can get great heatsinks for between 30 and 50 bucks not including shipping.
So, what can you do with what you've got. I've already mentioned a few possibilities in my other responses. Beyond that you might consider lapping the heatsink. Also, what sort of thermal interface are you using? If you're not using a version of arctic silver, that can make a few degrees difference. Also it's worth asking around to see how accurate your motherboard's thermistor's are typically accurate.
Now many people overclock up to 50C, you're at 40C. One of the first things you should do is test the temperature at full load. THere are a variety of programs that will keep your cpu at full load for as long as you like. THe full load temp will give you a better base of comparison that "normal" load will.
I've got a cold and my brain is shorting out, so I'm going to stop here.
nihili