Other issues:
The two posts on the far left and far right of your CAD model don't seem to quite touch the bed. I think you should check that in your CAD.
Also make sure your fan on the print head is working - it's hard to tell but it looks a little bit like the fan isn't cooling the part enough between layers. Is it possible that the fan is sucking air instead of blowing air? Ideally the fan should *not* blow directly on the nozzle, but *should* blow onto the part.
I'm sure you will other problems with other parts you print as there is much more to learn so please let us know what goes wrong next.
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gr5 2,224
Your settings look quite good. I call what you are seeing "stringing". I have some tests I did that showed it gets better at lower temperatures but it depends on the filament brand and color. I haven't tested stringing issues for "ultimaker gray" yet. Here is a photo that shows the affect of temperature and stringing:
http://umforum.ultimaker.com/index.php?/topic/1872-some-calibration-photographs/
You could also try increasing the retraction distance a little - maybe 6mm instead of 4.5mm. But be careful. If you retract too much then air gets in the nozzle and the air bubble rises into the nozzle then it warms up and expands and causes oozing plus later the air comes out and you get missing plastic.
I use 4.5mm and it is about perfect but I also use one of these:
http://www.thingiverse.com/thing:46157
Without the above clip you might need a few mm more of retraction.
HOWEVER, the stringing isn't too bad on your part and is pretty easy to clean up after you are done printing. Some day after you have printed 100 parts you won't care about a little stringing. I recommend buying a small metal file to help remove this kind of thing.
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